Off course you are entitled to your own opinion, If you like the PSP screen better, fine.

However, The PSP screen is most definitely not sharper than the 770's

-PSP:
4.3 inch 16:9
480 x 272 pixels
16.7 M colors

-N770:
4.3 inch 16:9
800 x 480
65K colors

More colorfull maybe, sharper most definitely NOT.