Don't see why everyone is riled about this (well not everyone, but some people).
Don't Insomniac focus on one platform?
Valve = PC really. They are masters of FPS and usually very good at spotting and hiring talent or nurturing great mods (Portal, Counter Strike, Day of Defeat, etc).
They've dissed all consoles including the 360 so its not like they are fans of some consoles vs others - they just don't really like them period from what I read.
However, given the purchasing demographic of 360 and how (it seems) relatively easy a port is I can understand them grabbing that extra cake. PS3 would indeed take much more effort so its a fair choice on their part not to stretch themselves in that direction.
If you want this game you should really get it on PC. If not, and EA port it, then I'm sure it'll be decent on PS3 - I played some Orange Box on PS3 and it really wasn't that bad and you've got to assume EA would do better job with this game now they've got one Source port under their belts already.
Try to be reasonable... its easier than you think...
