First off, welcome.
Second off, this is the “General Discussion” forum for mostly off-topic discussion. If you truly wish to discuss actual game information, please see the “Fighting Game Discussion” which might direct you to the individual game forum section ( http://forums.shoryuken.com/forumdisplay.php?f=100 for MvC2).
As far as consoles, for MvC2 the only accepted tournament used versions of the game are on Dreamcast. Other games are considered best on other consoles, but considering for MvC2 the Dreamcast IS the arcade hardware (NAOMI board) it runs pretty much 100% the same as the arcade does. PS2 feels watered down, especially the sound, and I believe has some slowdown issues.
If you truly wish to compete, you’ll probably only find comp willing to play in the DC. If you’re just casual, stick with what you have. You must remember, some of these people have been playing MvC2 for like 10 years or something ridiculous like that.
Also, this is yet another thing I dislike about this community: You’ll hear people complaining about how it is shrinking and we get no new blood, but someone new shows up expressing interest and you guys jump up his ass and rag on him. I realize a lot of people think they’re top fucking ‘dawg’ in their game of choice because they beat all their friends/the CPU and they honestly have no idea how to play the game on a higher level, but at least give them a chance. If they’re willing to travel to tournaments and at least try and improve their skills through practice and application then I say welcome them.
People will stop referring to themselves as “beasts” etc if they get whomped a few times by someone who is considered “not so great” in their game of choice.
I remember there were some guys from my hometown who decided to have a CvS2 tournament and posted on SRK, so myself and some of the guys from Richmond came up. They asked us about tournament settings and were dismayed to see that we didn’t allow EX grooves and didn’t allow Shin Akuma/God Rugal/other banned characters. The way I see it is these people will either realize that playing competatively doesn’t interest them or they’ll get totally hyped up and learning and advancing and will actually get pretty decent. This group did the former, and we never heard from them again.