How do you mean?

In any case, my guess is that the PSP versions are based off the NTSC ports. So it would be different.

I dont think I will ever be playing it on PSP anyway.

I would sooner guess that the PSP has a more sophisticated emulator when it comes to PS1 games.

You're probably right, given that the PS3 version is actually a port rather than an emulation.

I'd say PS1 so you can own physical copies but just go with Steam so you can play MO and SW.

PS1 so you can sell it at a ridiculous price someday.

I doubt it. PS1s are so common, PS2s even more so.

What? They're the same version. My friend had AE and AO on his PS3, he just copied the files onto my PSP and it worked like gold.

They could be running the same file through different emulators.