It will be close depending on the Wii releases. But there is still Gem which could be big if the right software is released. The Wii could win by a small margin by a huge margin or loose against the Ps3 nothing is sure yet. At the moment it looks like the PS3 has the better cards but a Zelda release in 2010 could change that if SMG2 will move as much consoles as GT5 or a possible FFvs13 dont know yet.
And I think heavy rain could have an impact on the japanese market. The Japanese like such games. HR could be big there and because of its uniqueness it could move a decent amount of Hardware if its a success there.
And FF14 could also be big in Japan there are too many unknowns. And Nintendo announce games and release them pretty quick as someone mentioned before.