You cant really say that.... he has played on one of the worst teams in football.
Now, what does concern me is he only catches about half the balls that come to him, but he has been working with different QBs constantly the entire time.
2007 - 70 rec 995 yds 5 TDs
2008 - 86 rec 1022 yds 7 TDs (157 targets)
2009 - 47 rec 589 yds 4 TDs (87 targets) (missed 5 complete games)
Full season projection 68 rec 856 yds 6 TDs 126 targets
He most certainly isnt catching 100 balls a year, but if I knew my football team was horrible and you told me as the only game in town my #1 WR would average 70 receptions 850 yards and 5 scores a year I couldnt really complain too much.