CJ will only get better too, look at what he has worked with his first few years in the league. The guy was double teamed from the get go his rookie year, he's never had a QB worth anything till this year.
Dez has the advantage of having a pro bowl QB, & a very good WR opposite him and an elite TE. CJ has had NOTHING up to this point.
I am not knocking Dez at all, but he is simply not CJ and never will be. CJ has everything you can want in WR, big, tall, strong, fast, hands, smarts, maturity and a great attitude on & off the field