MW2 was. Maybe those tools can't handle online coop campaign, maybe they can but require a longer development cycle. We are getting one COD a year now so hopefully the tools mature and give the developers more leeway to do newer cooler things for the game addicted like myself. You're never alone in these games any more, you drop in as a team, one controllable PC and a bunch of NPCs. This is ridiculous we are all in 2011 and there are barely any games that have a full campaign you can play with the buddy online. RE5 has it and I can't think of another game that does. Hopefully Guerrilla Games has online coop campaign ready for Killzone 3, that would be a great feature to have. Have one player be Rico and the other 'Annoying Puerto Rican Dude'...