A few more of my thoughts. (I still won't have projections until later.)
1. Even if the Chargers had traded Vincent Jackson for Torry Holt straight up just before the draft, WR and S would still have been the top two positions of need, so drafting a WR in the first round wasn't a surprise, and doesn't necessarily say anything about Jackson. (With Holt at WR1, the WR2 would have still been below average in talent for the NFL. Name another position on the Chargers for which that'd be true. Safety? Okay, now name another.)
2. In response to JayMan's questions, the poor throws from Rivers were not caused by Jackson's inability to separate. On the plays I'm thinking of, Jackson was open. They could have been caused by poor route-running (so Jackson wasn't where Rivers expected him to be), but Rivers took responsibility for them in post-game interviews, which is evidence against that view (but not conclusive evidence).
3. While Jackson's TD total isn't a lock to go up, I don't think last year's TD total was a fluke. McCardell and Parker were the starters, but they both came out of the game in the red zone because Jackson and Floyd were better targets in that area. Jackson is a very good red zone target, and should continue to be targeted down there frequently. He is also a legitimate deep threat and can score on long patterns.
4. I would expect Jackson's touchdowns per catch to drop this year. It was anomalously high last year. But it will drop because he'll get more catches, not because he'll get fewer touchdowns. Jackson will play full-time between the 20s this year, not just in three-WR sets and goal line situations.
5. It is confirmed that Jackson is currently considered the WR1 for the Chargers. AJ Smith and others in the organization have said so. Somebody mentioned that Jackson and Parker might be 1a and 1b. I would say it's more like Jackson is 1, and Parker, Floyd, and Davis are 2a, 2b, and 2c. That's as of right now, however. By the end of the season, any of those guys could be number one. Maybe Davis will pull a Marques Colston. Who knows? But Jackson would be the current favorite to finish number one.
6. I like Floyd's size, athleticism, and hands, but I think Jackson is the more complete and better overall receiver. Jackson has better speed, is stronger, and runs better routes (although he needs to improve in the last area). Floyd might have better hands, but they both have good hands. They are both straight-line guys to some extent, but Floyd more so. Floyd has a lot of physical potential, so I'm not counting him out in the future ... but based on last year I'd say Jackson is more complete.

, I completely agree on almost all accounts.
Since you took issue with the last sample set being too small, let's broaden our horizons, shall we? Jackson caught a whopping 27 passes last year, as a 2nd-year player. In the last 10 years, 55 receivers caught between 20 and 35 passes in their 2nd NFL seasons. How did they fare in the following year?...Name Year Recs Yards YPC TDs
Brandon Jones 2006 27 384 14.2 4
Nate Washington 2006 35 624 17.8 4
Rashied Davis 2006 22 303 13.8 2
Roddy White 2006 30 506 16.9 -
Roscoe Parrish 2006 23 320 13.9 2
Vincent Jackson 2006 27 453 16.8 6
D.J. Hackett 2005 28 400 14.3 2
Devery Henderson 2005 22 343 15.6 3
Keary Colbert 2005 25 282 11.3 2
Michael Clayton 2005 32 372 11.6 -
Patrick Crayton 2005 22 341 15.5 2
Reggie Williams 2005 35 445 12.7 -
Wes Welker 2005 29 434 15.0 -
Derick Armstrong 2004 29 415 14.3 1
Doug Gabriel 2004 33 551 16.7 2
Kelley Washington 2004 31 378 12.2 3
Kevin Curtis 2004 32 421 13.2 2
Cedrick Wilson 2003 35 396 11.3 2
Darnerien McCants 2003 27 360 13.3 6
David Givens 2003 34 510 15.0 6
Donte Stallworth 2003 25 485 19.4 3
Jabar Gaffney 2003 34 402 11.8 2
Kelly Campbell 2003 25 522 20.9 4
Tim Carter 2003 26 309 11.9 -
Dante Hall 2002 20 322 16.1 3
Drew Bennett 2002 33 478 14.5 2
Santana Moss 2002 30 433 14.4 4
Scotty Anderson 2002 25 322 12.9 1
JaJuan Dawson 2001 22 281 12.8 1
Larry Foster 2001 22 283 12.9 -
MarTay Jenkins 2001 32 518 16.2 3
Ron Dugans 2001 28 251 9.0 2
Craig Yeast 2000 24 301 12.5 -
Donald Driver 2000 21 322 15.3 1
Macey Brooks 2000 26 216 8.3 -
Wane McGarity 2000 24 235 9.8 -
Bobby Shaw 1999 28 387 13.8 3
E.G. Green 1999 21 287 13.7 -
Patrick Johnson 1999 29 526 18.1 3
Tim Dwight 1999 32 669 20.9 7
Albert Connell 1998 28 451 16.1 2
Bill Schroeder 1998 31 452 14.6 1
Dedric Ward 1998 25 477 19.1 4
Derrick Mason 1998 25 333 13.3 3
Keith Poole 1998 24 509 21.2 2
Will Blackwell 1998 32 297 9.3 1
Bryan Still 1997 24 324 13.5 -
Charlie Jones 1997 32 423 13.2 1
Eddie Kennison 1997 25 404 16.2 -
Eric Moulds 1997 29 294 10.1 -
Freddie Solomon 1997 29 455 15.7 3
Karl Williams 1997 33 486 14.7 4
Muhsin Muhammad 1997 27 317 11.7 -
Stepfret Williams 1997 30 308 10.3 1
Terry Glenn 1997 27 431 16.0 2
Excluding the 2006 entrants [since they've yet to play Year N+1], how did this group fare?
Year N = 29 catches
Year N = 391 yards
Year N = 1.9 TDs
Year N+1 = 32 catches
Year N+1 = 464 yards
Year N+1 = 3 TDsOf the 49 receivers in the sample set:
Four (4) exceeded 1,000 yards receiving in Year N+1
Seven (7) exceeded 800 yards receiving in Year N+1
Six (6) exceeded 5 receiving TDs in Year N+1
Fourteen (14) exceeded 3 receiving TDs in Year N+1
As many receivers saw declines in their reception totals (24), as showed improvement (25)
Almost as many receivers saw declines in their yardage totals (23), as showed improvement (26)
Almost as many receivers saw declining TD totals (23), as showed improvement (26)
19 out of 49 improved in all three categories [39%]
7 out of 49 improved in two of three categories [14%]
26 out of 49 improved in at least two of three categories [53%]Looking at LHUCKS "yards per reception" subset...Vincent Jackson averaged 16.8 yards per reception last year. 12 receivers in this list averaged 16.0 yards per catch or better in Year N...let's see how they fared:
Receptions Year N = 27, Year N+1 = 34 [24% growth]
Yards Year N = 489, Year N+1 = 514 [5% growth]
TDs Year N = 2.9, Year N+1 = 2.0 [0% growth]
One (1) receiver gained 1,000+ yards in Year N+1 [8.3%]
One (1) receiver gained 800+ yards in Year N+1 [8.3%]
Six (6) receivers gained 450 yards or less in Year N+1 [50%]
Two (2) exceeded 5 TDs in Year N+1 [17%]
Three (3) exceeded 3 TDs in Year N+1 [25%]
As many saw declines (6) in receptions as improved (6)
As many saw declines (6) in yardage as improved (6)
As many saw fewer TDs (6) as improved or stayed the same (6)So again I'll ask, why the love for Vincent Jackson?