I lean towards the "Fighting game" category. Anybody who says otherwise is an elitist jackass who ejaculates every time a company vs. company game comes out.
That's a bit of a jerky way to view other people who don't agree with you isn't it?
My gut instinct is that MvC3 will be a pile of suck. I'm still buying it, and I expect to have fun, but then 1 week later I'll be like "Why'd I waste money on this?" There's ultimately little reason to pay attention to fighting games nowadays, even with online play. Unless you want to join the elitist supreme group mentioned above, you really only have one option:
I hardly think that the game will suck especially with how Capcom is being pressured by fans to make it as good if not better than MvC2. As for longevity of playability, if it is as good as the it's predecessors then it will have decades of play in it.
- Play the game for a week or two until you get bored of single player, and then bust the game out at parties and other occasions with friends where everyone is bored and trying to figure out something to do.
Isn't that Smash Brothers is anyways? I hardly even turn on my Wii and the only times are to just kill time or with friends who want to play it.
Now...back to the question at hand.
I do believe it's a fighting game but not one of the conventional sense. While it's not like Street Fighter or Mortal Kombat, it is nonetheless a fighting game.
(Also...hasn't this topic been dragged to death already? I mean there's usually a topic like this popping up at least 3 times a year on any other boards online. It always leads to it being locked or deleted because someone can't keep from trolling their opinions.)