Why did Sony go head-to-head with the NDS in the PSP era, but the PS Vita unexpectedly lose despite stronger hardware, with a much less futuristic feel than the 3DS?

为什么索尼在 psp 时期和 nds 五五开，但 psv 出人意料输给了性能，科技前卫感远低于自己 3ds？

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