3DS was doing better numbers than the Vita did the week of the price drop and seeing past performances of similar games I don't think that the price drop mattered that much.
SK release week - 3DS sold 68k
SK:Burst release week - 3DS sold 68k again
That shows Vita's audience is more receptive to an SK game. Everything else staying the same, the next SK should be a multiplatform release.
PSV: I think it will hold well, there are games coming for the next few weeks, plus impact of games, bundles, color and price cut from past two weeks.
Not really a surprising week.
Seems reasonable to me.