He'll never be better than HBK, or be bigger than Rock or Austin, no matter how many World titles he gives himself or how many vignettes talking about how he was in the great match ever he runs.
He's been in others shadows even as a main event guy, and he's never let it go. Others like, i don't know, Edge, or Mick Foley, for instance, they were main event guys. They weren't Austin big, but they were still main eventers and they seemed happy with what they got, and realised it's not possible or them to be Austin big.
HHH never seemed to realise that. He isn't "the best" or "the biggest" no matter what he does, but of course, he's in a position of power so he gets to try and make people believe he is through stories based around him being dominant or endless title reigns. He's no different from Hogan in that "mememememememe" mentality, only Hogan really was the biggest star ever. HHH was (is, I guess) a big, main event wrestler. Just like dozens of others. That's it, though, he was NEVER the true megastar.