Bayonetta 2 will be very, very interesting to watch. This is a type of game that many Nintendo gamers end up ignoring, usually. With that in mind, it's hard to think it will do as well on the Wii U as it would on a Playstation console. However, Nintendo gamers might flock to it because of its nature as a Nintendo-published exclusive.
I think much of the industry will be watching Bayonetta 2, as well. This will be a true litmus test of how well a game aimed at the core, with more of an adult theme, can perform on the Wii U. This might be a defining moment for the Nintendo's core initiative, one way or another, with regards to third-party content.
On a personal note, I'll also be interested in seeing how the Nintendo crowd who have been very vocal about how much they hate games aimed at adults end up reacting to Bayonetta 2. This is the same group who seemingly hate that the graphical ability of consoles improves each generation, as well. Anyone else expecting hypocrites to spring forth in vast numbers?
As far as the numbers Bayonetta 2 generates, I don't think they'll be especially good, though I think Nintendo went in knowing that. Bayonetta 2 isn't just there to create a profit off software sales, it's there to lure a new demographic to the Wii U. That was Nintendo's plan, anyway. Not sure if it will pan out, though that's something we can't judge for awhile yet.
