I designed everyone to be equal. It's up to actual players and competition to determine who's stronger. Then, if it's merited, I'll buff the characters.
That works for me with no issue. Make sure nothing is missing when you move the files over and that you're playing it with a version of proton compatibility.
Try going to practice mode to pull it off, and you can do all supers two ways, so find the way that's easier for you. You can check their movelist in-game as well.