well, conventional wisdom is runningbacks usually fall off after 10 years.
but every knows that.
the difference is, he put up A+ numbers the two years before, and after one rough season where he fought an injury, people are already shitting on him without actually letting him come back and show what he can do.
I think people aren't being fair to Tomlinson because they take the age into consideration, and because he didn't have a great year last year. I heard some fuck up on Around the Horn today try to say that Darren Sproles was the future of the San Diego Chargers, and the sad thing is people believe this.
Take this into account, Darren Sproles will never be anything more then a situational runningback, he is just a different type of Devin Hester or Reggie Bush. you put him in positions where he can make plays and he'll reward you, but if you ask him to take 30 carries a game like Tomlinson and his little ass will be hanging from the stands after the defense gets through with him, ask Pittsburgh, they did it.