Maybe so, but I'm not talking about his quickness or change of direction. I think his quickness, vision, and balance are still elite, but he's doesn't have the pure straight line speed to run away from people that he did in his first few years. I still think he's easily a top 10 RB and probably top 5.
He's still a great RB but the question is how long can he play at this level? I think he can from two more years but beyond that, it's questionable. RB decline tends to be straight down, not a slow decline.