He's the best they've done of "protecting" a character all around. Like Destor said, not exactly born with talent, & nobody was really on his bandwagon until he cut his beetfaced Talking Smack pipebomb - but he's an awesome example of how far you can take a low level guy if you bust your ass
taking care of every aspect of his on-screen booking.
I thought the go-to meme was supposed to be that WWE is shoving Roman Reigns down our throats - but who just fucking pinned the guy in the middle of the ring, on prob the highest profile Raw that isn't following Mania. He got the final word on Ziggler. He got the final word on Dean. My guess is he just got the final word over Roman. This is a college level course in fabricating a "hall of fame career" for a chosen worker out of whole cloth