I'd have to go with LBP. It's been getting really good press and if Sony markets the hell out it or bundles it, like they should, it will do over 2 million easy.
Banjo looks alright but I expect it to do about as good as Viva Pinata, at about 1 million.
I think Banjo will do lower numbers due to Microsofts userbase. Also, it has more to live up to, and will likely be reveiwed more harshly, by reveiwers/fans of the originals who don't like their Mario 64 cloned platformer turned into a built your own vehicle thing (even if it is good).
Then again, if Microsoft does a casual bundle to combat Nintendo, packed with Banjo at sub $250, this game could push higher numbers.







