With regards to Super Smash Bros: We seem to be overlooking that it has well established, easily recognizable characters, and it's a non-gory fighting game that's family friendly(ish), and easy to pick up. I don't like a lot of things about it, but it's a decent game. I enjoy it for what it is.
@Sailerius Have we been playing the same game? Literally the last thing I think of in regards to Smash is a lack of soul. And it's by no means slow, I don't really know where you're getting that from. It's one of the more fast paced fighters out there. The only fighters I can think of that are faster are Guilty Gear, Blazblue and Marvel vs Capcom. Don't really see the issue of it being a cash cow either. Smash makes a ton of money. Always has, probably always will.