The posts above, haha.
The internet really is a bubble
Story of breaking away from Roman (and his twin) and going solo (went to a different brand to show hes not just a tag team wrestler (although it was funny that his first title after doing that was the tag titles with Cody). It is a tweaked version of Sami as mentioned above, but also its about timing. His popularity has co-incided with them having a second world title, the long term Roman reign being over and other top stars having their own stories.
But yes, his promos, his catchphrase, his entrance included are catchy.
Forget what people say here or X or wherever similar, he has an aura and coolness factor. His matches are defo not classics (hated his match with Jimmy last year), but they are passable. And yes he might have only three or four moves, but they all have an impact that the crowd react to.
I personally wanted Cena to win and do the whole 'lolCenaWins' thing by beating Gunther (after winning the rumble), going on a typical Cena title reign and then losing it at Summerslam (initially wanted Breaker but the tease with Jacob Fatu was great too)