While I don't necessarily think that your claims are completely without merit, Dark (and believe me, I'm sticking my neck out by saying that), it's really insulting and frankly, somewhat absurd to say that the only reason people disagree with you is because every last one of them is somehow "less informed" than you. This is especially true because a good deal of the people that have commented on your statements are experienced competitive and semi-competitive players themselves.
Emblem Lord put it best. Mediocre characters ARE often underrated. As a Yoshi and Pokemon Trainer main, I know this as well as anyone. People always have a tendency to exaggerate the weaknesses of characters like that without keeping them in the proper perspective.
HOWEVER...
The flip side of that coin is that a lot of people that main these characters have an equal tendency to be overprotective of them and downplay weaknesses that should be legitimately considered.
What you have to remember is that there's a difference between saying "Peach has exhibited less overall potential and has more flaws as a character than these characters," and saying "OMG PEACH SUX UL NEVAR WIN WITH HER!!!1" I don't recall anyone saying Peach sucks (though it could have been mentioned facetiously at some point). She isn't a terrible character. But the fact is that DK and Pit have the match-ups, the statistics, and the tournament results that are ALL better than Peach's in general.
You sit here and say "Well, you just aren't listening to me," because you really believe that's the case. But see, there is a certain psychology to forum discussions. By constantly berating people, you give them very little reason to give your words any special attention. And even more so, you have to remember that even though YOU understand what you're driving at when you say something, you might not be explaining your points in such a way that other people can get behind.
Anyway, I hope that makes some sense to you. I posted this after working an overnight shift, so I should really think about heading to bed at some point. Catch ya later!