Which will sell more Lifetime: 360 or PSP?

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homer said:

mantlepiecek said:

I think 360 might sell more. PSP is going to have a successor this year.

I agree, although, I could see it being extremely close if they release a psphone, if we count that sku as a psp hardware sold. Also, it may depend on how early the other gets a successor, which by  the way it currently looks, the psp will probably be succeeded before the 360.

Why would the PSphone count as a PSP sku? Would they fundamentally be the same hardware?