I do not mind the matchup number discussion, because at least that leads to people discussing the actual metagame. I think it's kind of dumb how people take these discussions so personally sometimes, like even suggesting a that a matchup is at a disadvantage or not for one character is somehow a slight to a player's skill. But whatever, discussion is discussion.
What I don't like are the threads that simply list top 10 or top 5 because there's no discussion. It's just listing lists. Who cares? At least hammer out some match ups. List threads are boring, a waste of time, and dumb, and lame, and I don't like them.