Even though the graphs based on VGC numbers basically show 4?
Even still, 7 months (4 actually) is a short boost for going to such a low price point. The PS3 has had a longer, better boost in going to $299.
PS3 boosts are bigger up to now, that's a fact. Kinect may be a different story though for thr 360.
have you looked a PS3 2010 v 2008?