I think it would've been wise/nice to bundle Red Steel 2 with the WM+. I mean, you're going to need a couple of them anyway, so why not buy some WM+'s you get some games with?
But I think it'll sell. WM+ attach rate should get pretty high, and most people who'll buy Red Steel 2 I quess will be informed gamers who know you can't play the game without a WM+.