I would say Sony paid for this, but it wouldn't surprise me if they didn't, EA seem to dislike Microsoft (probably due to them being in bed with activision)
Doesn't battlefield sell better on 360? lol
ofcourse sony would have paid for it, even though ea tends to favour sony more while activision tends to favour microsoft more they still want money and they wont give free exclusive dlc for free, especially since this game is ment to hurt cod
and battlefield 3 didn't really sell that much more.
I think the 360 version just scraped over 3m while the ps3 version is about to get 2.5m, plus this is sony wanting to get people to buy the ps3 version like microsoft uses there timed dlc to get people to buy the 360 version.
im sencing a ps3 battlefield 3 bundle comming this holiday to compete with cod obviously it wont but it could do well to help push ps3 unit's especially in amercia, i remember seeing a battlefield 3 ps3 vault a few weeks ago so that could maybe mean something.