You have yet to show us why we should just blindly take his stat as a be all, end all. This same WPA stat has Hartline over receivers like AJ Green, Reggie Wayne, Steve Smith, Greg Jennings, Hakeem Nicks, Larry Fitzgerald and Mike Wallace, which is utterly absurd. If we are to take this stat and give it the kind of importance you want us to, we already had a great WR core with Bess and Hartline. We both know thats ridiculous.
Your posts would be much better if you could realize that metrics in football are not the same as metrics in baseball. hey can be somewhat useful and fun to look at, but ultimately its foolish to place a lot of value in them.