It is relative, he is bigger than Lee, so Lee is smaller than a player you call NFL average.
I don't think the scouts categorize size by really big, really small and everybody in between, there might be more subtle gradations, and Watkins could grade higher on the basis of being both faster and bigger.
They are close enough that if you reversed their measurables, and Lee was bigger and faster, I might like him better?
Fair enough, size matters.

But I ask how does height and weight help a WR?
I would argue, mainly size helps a receiver get open. Weight mixed with technique, strenth, and agility makes it easier to beat press coverage. Bigger wide-outs push around smaller corners to create seperation. Taller receivers may catch passes over shorter cornerbacks even without gainin seperation.
With respect to Lee v. Watkins, I don't see the latter's 10lb advantage making up for the former's quickness as a means for getting open. Watkins inch in height advantage may not matter either. Without knowing their arm lengths or verticals, it's unknown who has the larger catch radius.
Also, scouting is an act of imagination and projection. We can assume they may be asking themselves if Watkins can run a more diverse route tree in the pros than bubble screens and go routes. If the answer to that question is yes, than they may think they can harness that speed to get open in more diverse ways and in more areas of the field than what we saw with the more limited repertoire of routes in college.
Does he look unusually stiff or robotic to you? Anything to suggest the intricacies of learning slants, square ins or square outs and a more complete route tree will prove insurmountable for him at the next level? Not being facetious, serious question. I realize some players never get it, but he seems like he has the requisite work ethic, passion for the game and desire to get better that leads me to like his chances.
Whether or not a player succeeds in transition depends on ability as much as desire. While I may not question Watkins' attitude, I have reservations as to whether he can get open consistently executing a full route tree in the NFL. I don't see good acceleration or agility - probably average for a NFL WR his size. He could certainly improve his route running; he probably will. In college Watkins' speed afforded him some cushion, of which he took advantage. He won't have as much respect in the NFL. I'm curious to know what kind of 40 he runs. I'd set the over/under at about 4.4, which is far from special in the NFL. I don't see DeSean Jackson or Mike Wallace kind of speed from Watkins.
Referring to your example. I would argue Watkins is on the opposite end of the spectrum, but not to the extreme. Some players aren't used properly in college, so they don't get to show their talents; other players are used so perfectly, their production will exceed their talent level. (Tebow anybody?) Watkins put up some impressive stats at Clemson in ways he won't be used in the NFL. Since his production is a large part of the reason he ranks as one of the best prospects, I'm a little skeptical.
Good post,
thanks for the feedback. I have the 1.5 pick in an upcoming dynasty draft, and might be choosing between Evans and Lee (no hope Watkins will be there, unless he tests for Angel Dust at the Combine), so I appreciate the opportunity to sharpen and clarify my thinking on how to parse their constellation of physical traits, athletic attributes and skill sets.
I think we are seeing different things as it related to the quickness difference between the two. Its there, but from my perspective, it is more of a subtle difference. Agree, we will know more when we get VJ data.
The ability to run a full route tree also has to do with other things than acceleration and agility (which no doubt, all things being equal, are assets), and at a root level, also with things like precision, attention to detail, diligence, hard work, knowing exactly how many steps to take, where to be at the right time, etc. This is why close to zero rookies are master technicians, and even many vets never are. I think we are talking about different things when I used the Keith Jackson example, and you drew a different conclusion. Scouts will have to use their imagination when it comes to projecting whether he will be able to run a full route tree or not. If South Carolina ran a pro style offense, we would already have the answer, and it wouldn't be in doubt, as it is with you.
Sammy Watkins (few sets of highlights below). Some are seeing him as fast but not necessarily quick, I guess I'm seeing it different. He ran like a 10.4 or 10.5 100 m. IMO, that is hard to do without being quick and having some serious get off and acceleration, too. We don't usually refer to players with 10.4 track backgrounds as having "build up" speed and getting faster as they get downfield. He isn't Barry Sanders in the open field, but not many WRs are. The way he is described, it is as if he has a rocket strapped to him, is on ice skates and you just point him towards the end zone. He isn't QUITE that linear. One thing that hasn't been discussed is hands. Watkins appears to have outstanding hands. I haven't followed Lee as closely, but reportedly he had a lot of drops this season, so that could be worth watching.
Jerry Rice was the greatest for a lot of reasons (short area burst and quickness had a lot to do with hit, he was very strong for his size, supreme concentration, cartoonishly good hands, iron will and competitive determination, Walter Payton-like conditioning, stamina and endurance, having one of the greatest 1-2 punches in history at QB, along with Waterfield/Van Brocklin, in Montana/Young didn't hurt. etc.). But one of the biggest, and possibly most neglected, was his tendency to get north/south ASAP. He got a lot of extra yards by being decisive in this way. On a lot of the bubble screens, this is what Watkins seems to be doing. It may look like he doesn't have a lot of wiggle, I take it more as he is A) Getting what he can, and B) Sometimes he is so fast he doesn't need to string together a half dozen cuts and moves because his open field speed is destroying the angles of defenders, so why horse around and do a combo mambo/breakdance behind the LOS.
If Bruce Feldman (see below - puts out the annual Freak List) thinks Evans is going to run a 4.4, than just looking at them comparitively, Watkins is significantly faster, and that would make me think he cracks into the sub-4.4 threshold, which will make him a pretty hot property come May, and would be doubtful to get past CLE or OAK, so STL may not want to drop past 1.4 if they want him (though maybe they want Robinson or Matthews, and could possibly drop to 1.6 or even 1.8?).
2:28 - Nice back-to-back-to-back plays. First shows ability to go up and get a contested ball for a score that was maybe an intended back shoulder throw that inadvertantly went straight ahead. Second (2:33) shows some of the leg strength EBF referred to as he takes a quick hitter and powers though 3-4-5 defenders, with an assist from a USC OL or two

. Third (2:41) does highlight probably the best feet, quickness and elusiveness of all the Watkins/Lee highlights I looked at above. But in a lot of plays, like the Watkins highlights, he is so dominant at this level he is just running away from defenders so not an ideal showcase for the full range and scope of his skill set.
* Mailbag: Sorting out the (2014) WR class In the NFL draft by Bruce "Freak List" Feldman. To possibly add to the confusion, he doesn't really address Watkins, accepting the premise of the question that Watkins is off the board. But he does say he likes Evans best in the class, which was interesting. It sounds like he has some access to both Evans and Manziel in So Cal. He thinks he is going to run a 4.4, the first person I heard say that (personally I'm sceptical, my guess would be closer to a 4.55). He also reminded me that Evans was primarily a basketball player until his senior year in high school, so he could have substantial upside once he learns the ropes of the position (currently training with James Lofton on route running). He is only 20, which is appealing in dynasty leagues. Also interestingly, he likes "bend it like" Beckham more than Lee (I don't agree, just passing it along) and points out he is also a sensational athlete, and likes Matthews (and Benjamin) more than Robinson. He notes that Benjamin may be even more of a monster than Evans size-wise, but thinks he is even more raw, and is in his estimation more of a project and boom/bust-type.
http://www.cbssports.com/collegefootball/writer/bruce-feldman/24419062/mailbag-sorting-out-the-wr-class-in-the-nfl-draft
** I had not yet read Time Kibitzer and Xue's more recent comments as I was writing this, but I agree with what they said. In mentioning Wallace and Jackson, Wallace probably has the best deep speed (functional, anyways, not counting guys like DHB that can't catch the ball) in the league in the past half decade. Needless to say, Watkins could not be quite THAT fast, and still be REALLY, REALLY fast (he is). And as pointed out, they are different size, so not really a fair comparison, especially with Jackson. Wallace is 6'0" 195 lbs, so he should be faster, but he isn't as strong, tough or physical. Jackson is 5'11" 178 lbs., so with Watkins being two inches taller and nearly 30 lbs heavier (that would be like comparing Jackson to a player 150 lbs.!), they really don't belong in the same conversation.