On the other hand.
PC gets.....
Mods.
Better graphics when you have a high end computer. 360 and PS3 are equivalent of a mid range PC.
Greater customization of settings.
Mods.
I find the keyboard/mouse combo to be a lot smoother and accurate than a controller.
Did I mention mods?
True, consoles do offer that pick up and play ability and the standardized hardware means you don't have to worry about requirements.
It's swings and roundabouts.
Although I can't really see where you aim for this thread to go. It's a given that it'll be on PC, no doubt there. As for Xbox 360 and PS3, they are the two major consoles.