See...guys like Hogan, Punk and Hart you could argue there's at least a justification to that because its not so much percieved greatness as there is a bit of evidence of greatness be it drawing power, work rate or whatever Every top guy must have ego and should. Granted all 3 live their gimmick in more ways than one but I can sort of see why they did.
Now lets talk about my man DDP and Kevin Nash
I dont wanna talk about bad about Dallas but dude tends to put himself over and mythologize just a tad and Kevin Nash...I mean look, its not like his legacy was anything on his own. He talks about changing the business be it NWO or guaranteed pay and Im sort of like "Well Hogan, Hall, Michaels etc" those people have probably way more to do with those things than you. And he's clever cause he feels like if he just dissmisses the whole thing as fake he may come across as too cool for school.
I'd go with those two. You could probably add Warrior and Flair as well, but in one if not both of those cases again, somewhat justified