IF it happened already, what's so surprising about it? the PS3 sells all over the world, the 360 sales great in NA and has strong sales in Europe but not by much...in Asia the 360 is non-existent to put it kindly. If the PS3 isn't on top already, then it's only a matter of a few months, really. The tide has turned, the fate is decided, the 360 is gonna end THIRD this generation.
Does that mean MS is making less profit than say, Sony? Of course not! They've done incredibly well and surely at the end of its days the 360 will be more profitable than 2nd place PS3, not to mention the large market share (especially NA market share) MS has taken from the former dominant Sony.
That in itself makes the 360 , in my opinion, a neck-to-neck tie for 2nd place with the PS3 even if it doesn't end up having the 2nd best total worldwide market share. And the PS3 even if it ends up with the 2nd largest market share (for consoles, behind Wii this gen), it may end up not profiting as much but its saving graces have been many including the resurgance of an incredible gaming library the console didn't have for the better part of its first year and a half, the vast improved PSN network and all the added services and extras, not to mention the ever-improving PS3 hardware which from day one with blu-ray, hdmi, wifi, and later stuff like 3D and many other functionalities added via firmware, has set itself apart from the competition value-wise and tech-wise.