I believe PS3 will swing back up... but right now it needs some more exclusives and good titles releasing in a steady stream. Nothing too awesome has released for a while now, and of course with the economic downturn more expensive goods show the impact first.
I also note that even with a really low price point (Arcade) 360 doesn't seem to be getting any sales from PS3 - i.e. people are putting off getting a PS3 but aren't getting a cheaper 360 instead.
Assuming PS3 does pick up I doubt it can pass Wii unless interest in the console suddenly dies, while 360 I think is sure to be in third place in Others as I see little now to really turn the consoles fortunes around as really if the demand was there with the current Arcade price and games library it should be selling way more... I just don't think the higher demand MS needs is actually there.
Try to be reasonable... its easier than you think...
