LBP will be the better game and I'm going to say it'll sell better as well. Wii Music just has too much negative hype in the mainstream to really be a solid selling game. It'll go platinum and probably even double platinum but I think LBP will beat it out.
I mean going to correct myself Wii Music is still going to sell a decent bit but I think most of that is going to come from Japan where I doubt this game has much negative hype. I think in America though this game has been tarnished by E3 with nothing but brutal media against it. I mean most I can see Wii Music selling in America is 1 million. While it'll do well in the other territories I'm thinking not enough to put it over 5 million. I think LBP can do 5 million given its appeal and marketing.
I mean I'm probably going to stand corrected but I think LBP will have the edge sales wise.