got it for my son, I don't see what the big deal is. It looks like a bunch of button mashing to me, does it use the motion sensor at all? I haven't tried it yet, just watched my son play it for a few minutes.
Also, it does use the motion sensor, but using the wiimote is a poor poor poor substitute for a good gamecube controller.
Sadly, I think this holds true for almost all of the wii games.
Jigglypuff's Rest is so much harder to pull off compared to Melee.
I really like Fox because if you press down when doing a final smash, he does a barrel roll! Also, his B attack is as spammable as ever.
I really like being able to transform with Pokémon Trainer.
I haven't bought any Wii games, but this will be the first, once the price goes down enough.