Tyler is miles ahead of Wiz in almost every aspect. The reason he won't get as much play (and thus, most will prefer Wiz) is because he has intelligent subject matter but he doesn't have a way to convey it to the average listener. I personally love Wiz and Tyler, but Tyler is a much better rapper.
Also, what I mean by "conveying it to the average listener,": Nas and Jay-Z were both excellent at doing this. They could talk about the most sinister, serious shit and still have people play it like it was some catchy radio song.