Nah.
PSP6 will be made at same tech as PS6 and will run PS6 games. Days of one console version were over the moment devs decided to include Quality/Performance (and now even Balanced) profiles into pretty much every release this gen. So handheld mode will be just another profile.
Think of it as PC settings, but instead of having everything adjustable on infinite combinations of hardware, just a few profiles on fixed hardware. That just is more of a "just", since it's not what consoles were before, but the times, they are a-changin.







