The bump was expected but doesn't indicate strong interest from the public. Going off the Top 10, except for Batman, the 360 versions of multiplatform games still outdid the PS3 versions. No strong sales surge to reflect the hardware sales either but there could be from #11 on down but that doesn't seem too likely. I'll stop here since we won't know the full list for a while but the sales were decent but nothing to really brag about. However, once the 11-20 numbers come out, I doubt the story is much different.
Maybe I'm just a dumb xfag but this bump appeared to be a typical price drop bump - not a sign of turning tides or a game changing month.