So the X360 sold 3.45 mill in the first four months of 2009, and the PS3 sold 3.0 mill.
That's just a 450,000 difference, or rufly 15%. Not much. The PS3 is doing fine considering it hasn't got a price drop since the same four months in 2008, while the X360 price has been dropped twice in the EU (and once in NA).
Luckily it seems like Sony can only afford to cut the PS3 price by $50 in 2009 (if that), because a $299 PS3 would probably crush the X360.
I admit that 2009 has started great for the X360 though, and there's a decent chance to come 2nd in this gen even if it's going to be a very tuff battle.