Its hard cus the XBOX 360 has actually been very important to the PS3 this gen believe it or not....thanks to its architecture being similar to the PS3 multiplat PS360 games have become common and most big games are like that.
If 360 wasn't there then Wii would have flattened PS3 and we wouldn't get those "big" games....thanks to 360 and Microsofts marketing techniques/ competitive price of 360 the HD install base combined grew a lot and so most great 3rd party games have remained HD and didn't go to Wii
On the other hand Nintendo's Wii system has been horrible for me as a gamer.....I am not happy with how the Wii has turned out to be....I wouldn't mind if they just did handhelds because they are awesome at that.
So instead I will say Apple....the iphone can be a threat to the PSP 2 Portable Games Console
