It's actually PC.
I looked through the planned exclusives for each platform in 2010. This year, PC will have more exclusives than PS3, Xbox 360 and Wii, combined.
StarCraft II alone will PWN Final Fantasy XIII, Halo Reach and God of War. (Maybe not Gran Turismo right away, but I think it ultimately will.) StarCraft is the national religion of South Korea. When it is released, South Korea's GDP will take a hit. Asia actually has television channels dedicated to StarCraft competitions. As far as I know, neither Final Fantasy XIII, Halo, God of War nor Gran Turismo has that sort of influence.
And what platform is StarCraft on?
So PC will dominate in 2010.
However, PS3 has the most ruly, rude, immature, mindless evangelist fanboys, who will become even more obnoxious this year.
Essay Pro