Mario Kart 3DS- Looks like a combo of the DS and Wii games. Not sure how I feel about that.
Kirby Wii- Good to see that the powers have multiple moves like in Super Star. Looks good.
Kirby Mass Attack- Didn't really see anything new in this vid. Not really interested in this one.
Super Mario 3DS- Looks good, but it does indeed look a little slow. I hope the final product has more fast-paced levels.
I think Kirby Wii is the winner of this batch.