Don't worry about sounding aggressive, I'm far from the type to get bent out of shape about disagreement.
I won't disagree that Harris was a better college RB, but Gibson is basically the same age, in a likely better offense, and is FAR more physically talented. Gibson showed he can play at well in the NFL, and it stands to reason he'll only get better as he's learning the position. 2020 feels like Gibson's floor to me. I think there is a reasonable case for him as 2020's best RB. I'd take Taylor over him I guess, but nobody else.
I actually don't even think Harris is the best RB in this class. I'm not sure his lack of speed will play all that well, and for a 230 pounder, he isn't all that powerful. Beyond his college production, I don't see what people love about this guy. Feels like just a decent prospect, who highways of space to run through.
For me, Harris isn't a candidate at 1.1, unless he ends in a perfect situation, and a bunch of other guys both at RB and elsewhere in up in bad ones.