Being able to repeat the same 20 catchphrases every week is not "mic skills". Mic skills is being able to sell the match with your words, making me believe that the animosity towards your opponent was real, that you really hated him, and not simply aping the same crap every time. Nobody did that better than the Nature Boy. He made it personal without making it unrealistic. When he talked about the women, the cars, the money, it was because his status as champion afforded him those luxuries.
The thing is, once you get past the Rock's many, many catchphrases, his promos really didn't have much substance. He simply was not that great at thinking on his feet like some of the other notable talkers.
I think a lot of the younger posters, who automatically defer to the Rock as the answer to every question have no idea just how good Ric Flair was on the mic in the NWA. Many of them have only heard Flair from the last decade, when he is a shell of his former self. Ric Flair in his prime, was flat out better than anyone on a microphone. You probably also have no idea that Jake the Snake Roberts was as masterful at delivering maximum psychological impact through his words as anyone who has ever wrestled. Nobody ever talks about the Snake's mic skills, and yet, if you hear some his old stuff, it was downright chillingly intense.
Too many people simply don't understand that promos are supposed to sell matches, not just be a comedy routine. You want comedy? The Rock is your man. He will pander to the crowd by mentioning the city they are in, how he has finally come back there (even if he has never been there before) make some cracks about the colors you wear, call you a jabroni, and then take that sumbitch, shine it up, turn it sideways, and stick it up your ass, and then ask if you smell it. He seems to have a strange obsession with anally raping grown men with objects, it's actually kind of disturbing.