The epicness of the battle against Bowser on the Wii I assume? I wasn't totally expecting him to morph into Mega Bowser and take up up the entire left side of the screen. It wasn't that hard and after dying 4-5 times I finally made all the jumps right but it was still a pretty nice final boss fight. I don't think Bowser was a mega beast in the DS version. It has been so long since I played and beat the DS version that I don't really remember.