Well, my money's on the PSP, since those are generally better. But who knows?
But my real opinion is, you should buy the xbox version!
And an xbox!
And a live account!
For a game that isn't even out yet and will be out who knows when!
But yeah, the turn-based option is what made me say "cool." I learned about it at penny-arcade, and the quote they had was so good I'll just repost it: "If you're not familiar, let me have the honor: Blood Bowl is a board game that combines football with fucking murder, marbled together like a choice cut."