I ask because as of recent I've been on a bit of a fighting game stint, and I do believe that no fighting game encapsulates the bonkers fun of comics better than MVC2. That being said, my fantasies of having system-based free for all combat between superheroes on the scale of MVC2 is a bit hard to make concrete as power levels seem to be all wonky.
For one, you've got Thanos with supers based on his infinity stones and whatnot being about on par with chun li; same for other big sluggers like blackheart or doctor doom being able to be taken on by Jill heart from Resident Evil and the like.
Obviously, there are some tweaks to power levels inherent to all of this: either everyone has been buffed to power level 15, everyone has been nerfed to 10 or so, or somewhere in between: I'm really not sure. At this point, I'd be willing to bet maybe 13 or 14 would be an apt power level, but I figured y'all would have a better idea.
Here's the source material: https://www.youtube.com/watch?v=rr04yBYMSxo