Who said all those things? I never heard them! Xbox destroying Sony? That was never gonna happen, but I think theyve made more of a dent in the market than I gave them credit for.
You say its very difficult to beat companies that have built up a strong name in specific markets....well the word 'playstation' these days is used by a lot of people as a word for games machine so it wont be dificult for them to move into the handheld scene. Playstation is the strongest gaming brand there is by a long way and with there marketing power Nintendo will eventually be pushed aside.