You realize that when players hit their mid 30's at his position it only takes one off season and players can drop off tremendously? I mean hell, the way you and others dismiss the history of that with tons and tons of players kind of makes the entire discussion come off pretty amateurish. Reggie Wayne had a 1,600 yard season two years ago with a rookie at QB, and then has a major injury the very next season. This year he comes back and he's completely done. Moss went from being able to dominate to going to 3 teams in one season in his last year of being a Patriot and then was horrible after that. Completely different guy. In every sport, once guys hit that age range the drop off comes like a ton of bricks most of the time. It isn't some gradual thing that you see for years. To completely dismiss AJ's age and his last season is not a non bias analysis at all. If it wasn't a major concern, then teams would be lining up to trade for him right now to take on him and his contract.
AJ will be 34 this next season. Yet you want to compare him to a 36 year old Wayne that came off a major injury, and probably the SOFTEST WR to ever play the game in Moss.
And I'm not sure the stats back up your assertion about significant drop off, unless you are defining "mid-30's" as something older than 34/35.
Performances at age 34 for all WR's with 1000+ career receptions:
Jerry Rice - 108/1294
Marvin Harrison - 95/1366
Cris Carter - 90/1231
Tim Brown - 76/1128
Terrell Owens - 81/1355
Reggie Wayne - 106/1355
Isaac Bruce - 75/1098
Hines Ward - 59/755
Ward is the only one that showed a significant production decrease. Bruce was pretty much on his career averages. Brown had a 91/1175 season the next year at age 35. In fact Rice, Carter, Brown and even Owens all had productive seasons between ages 35-37.
Not to mention the guys with career catches between 900-1000 like Mason, Boldin, Monk and Steve Smith who all had 1,000 yard seasons at 34 or older.
These are his peers, and his peer group shows strong inclination of performing very well at age 34 and even older. While this does not guarantee any performance by AJ, if we are going to use your argument the history of the game, the odds are actually in his favor to have a strong season in 2015.
IMHO, you are a bit too eager to dig his grave.