3DS vs PS Vita

CPU

PS Vita has a 4 core ARM cortex-A9 MPcore
3DS Two 266Mhz ARM11

GPU

PS Vita 200MHz SGX543MP4+
3DS 133MHz PICA200

Memory (Ram)

PS Vita Has 1GB of Ram
3DS Has 64MB or Ram

Card Media

PS Vita HVG cards
3DS 3DS, DSi, DS Game Card

Display

PS Vita 5 Inch OLED Touch Screen Display

3DS 3.53 Inch 3D Display, 3.02 Inch Touch Screen Display

Camera

PS Vita Front and Rear

3DS Front 3D And One Inside

Battery

PS Vita 3-5 Hours

3DS 3-5 Hours

Storage

PS Vita M2 Memory Stick
3DS SD Card, 200MB Flash Storage

Backward Comatatable

PS Vita is compatable with Playstation 1, PSP downloads, PSP Mini and Neo Geo games via software
3DS is compatable DS and DSi games

 

My best game for these consoles

PS Vita Uncharted Golden Abyss
3DS Resident Evil The Merenaries 3D