By “number 2 in most drops” do you mean tied with 29 players for 9th most?
http://hosted.stats.com/fb/leaders.asp?range=NFL&type=Receiving&rank=232
31-17 Lions
Hot take but he would be pretty helpful right now as depth with Jacobs hurt and the CB depth being thin in general
That wouldn’t explain either of their stats
also you’d have to compare PFFs drop stats apples to apples with all other players