I honestly don't care if the game comes out on both the 360 and PS3, I would be a lot more upset if it was 360 exclusive (mostly because I have PS3 as well).
The biggest problem with people saying that the game should be "PS3 exclusive" is the fact that there are probably a good number of people who own 360's who want to play it too, and limiting it to just the PS3 or just the 360 would be kind of a dick move no matter how you look at it.
Granted, we (and clearly Aksys) do not have full say on what games come out on what systems, we just hope that it happens to come out on a system we own.
Besides, I'm sure once Aksys gets clearance for the release of Blazblue on consoles, they'd let us know. And to be perfectly honest, I would really feel sorry for the people at Aksys who go through all the hard work to translate these games and put a lot of effort into making these games available to us only to have their fans give them endless -your mother is a classy lady- for not releasing it on "the right console"
Granted, I will be morbid if the game isn't released on the PS3, but I can't change the decision to not have it be on there. I'm sure there's a few people at Aksys who agree with me (and maybe even reading this article).