I can't help but think that a lot of the people who are now claiming the 3DS is "doomed" don't realize that the reasons they expect the PS Vita to destroy the 3DS could have been used to argue why the XBox would be more successful than the PS2.
While I'm not saying the outcomes will be similar, there are a lot of things Nintendo could do that would significantly improve their sales; and there are a lot of things that could happen to the PS vita which would prevent it from getting the sales (some) people would anticipate. The most obvious thing Nintendo could do is have several large third party exclusives announced for the 3DS that will be released before the PS Vita is even on the market.







