Why wouldn't it not come out for the PS2? It's being released this month. The PS3 won't be released for another year. Anyway, you will still be able to play PS2 games on the PS3.
Personally, I do see a point of bringing LCS out on PC. A lot of people don't have PS2's or PSP's. I think they should make these games for all formats. It cost more money, but they'd keep a lot more customers very happy.
Actually, genius, the PS3 is out already now((like what, a month after you posted this?))... And a lot of people don't have PCs.... Or PCs capable of running many games. So they have to release LCS and VCS for Xbox, too. But wait! Not everyone has one of those, either! So I guess they must release them for GameCube, the DS, and the Wii.... WAIT. Not everyone has one of those, either!!! So I guess they better release the game in a Plug-In-Play format for the TV. Then everyone will be happy, right?
Uh, maybe he lives in Europe. The PS3 was delayed until March for them.