PS3 Mirror's Edge to get exclusive DLC; how is this good for gamers?

So a spokesman for Sony cleared up some stuff today, including the rumor that Mirror’s Edge would be released on PS3 first (not true). He also mentioned something interesting — and irking:

“PlayStation has an exclusive marketing agreement with EA regarding the title. Exclusive downloadable content will be offered on the PlayStation Network.”

So what you’re telling me is that PC and 360 owners are not getting the whole game. And you’re already making the stuff you’re not going to give me — before you’ve even finished the game! Real classy, guys. That is some Comcastic customer service.