The DS came out before the PSP... should "GBA to PSP" be considered a real jump? I don't think so.
It goes GB --> Game Gear --> Nomad --> GBC --> GBA --> DS --> PSP --> 3DS --> Vita
I could see one making the comparison of PSP to Vita or DS to 3DS since they're made by the same company. But GBA to PSP makes about as much sense to me as Game Gear to 3DS.








