1) I don't know were you got Mace was a much better duelist then people Like Kyp or Kun, sure he's better, but the gap is nowhere near as big as you're making it.
I never said he was better than Kyp or Kun specifically, although that said I still believe it to be so. But I still haven't claimed he's better than either of them by an extreme margin. He is still better though.
2) Dueling matters most when the Force gap is close, here though, we have several characters that are much more powerful then Windu. Kyp (who could beat him with TK), Joruus (who could possibly best him with TP), Traya (TK, Force drain, etc), Tenebrous (TK), Nihilus (Drain and TK), and Revan (Drain, TK) - feats, and accolades far outweigh Mace's own.
That is a fair point. But I would argue those fights could likely go either way rather than a solid majority in favor of either opponent. Mace could, after all close the gap and press a saber duel.
Another fair point. I guess I just read what you and others have said a certain way. Based on what I read it sounded like to me (and I guess I misread) that you were claiming that superior dueling skill tended to matter more. But I suppose that with these examples superior Force power is more of a factor, so I'll concede on this point also.