Wyatt puts himself (or perhaps creative) in a "tweener" stage, 1/2 the audience loves him while the other 1/2 dislike him. He needs to pick a path, either telling the fans in a PG way to 'F" off or embrace them. He is another one, WWE pushes, then cools him down, like Ziggy, Caesaro etc. It is getting hard as fans to get behind someone when the push eventually ends......
Regarding Sting, you need to listen to the Stone Cold podcast with Bischoff (may have been another) but he says the year Sting was in the rafters during the NWO Angle, he let himself go. When it came time to wrestle, I believe Hogan at Starcade, he blew up quick and the match stunk....