I don't believe he's matchup dependent in PPR. He's caught 6 or more passes in every game but one. In that one game he had five receptions. He's had double digit targets in every game but two. I think he's a low-end WR1 in PPR. At worst a high-upside WR2. If the TDs start coming I think he'll have WR1 upside in all formats.
I know he had a mediocre stretch of games a few weeks back, but even so he is sniffing top ten overall YTD. Getting a lot of intermediate targets that are nice 20-30 yard receipts along with a couple long shots and a couple or even a few goaline looks. That has ALL the makings of a true number 1 that would be on part with the Denver wrs, above vjax with his QB concerns but below the top tier of megatron and then A Green and Dez. That said I don't see him as they far behind green who is not always consistent with his QB and Dez with the back issue.
So, we've got a guy in they third tier of #5-10 overall going forward if he stays healthy.
Other than those top three and probably D Thomas I'm not sure there is a clear cut WR that I'd way over garçon. He might not be better than others in that tier but no worse either IMO. And he is the est option on a good offense, passing wise (unlike a decker or even Welker whom may have a slightly higher floor but lesser ceiling)