Maybe it's easier if I post the soecs of both 3DS & Wii U:
Original 3DS:
CPU 2-core 1 GHz a core
GPU 1-core 1 GHz, underclock at 400 MHz. It does around one dozen of the different game mechanics stuff.
Vertex performence 300 million at 1 GHz, but does 120 million at 400 MHz. Its a Micro GPU.
Shader cores, more then 50
open world, Lego City Undercover, or up to 5 times more then that. This game was pure polygon graphics with vehicles traveling 100 mph.
The NEW 3DS has a way more powerful CPU & way more longer battery life with even bigger screens, and a sweet spot for the 3D effect that can be seen anywhere by anyone. And it has a way more better display for a screen, then almost all hi-end TVs to this date. Comes out this February to April in 2015 though. Price $150 for New 3DS, but somewhere from $170 to $180 for New 3DS XL.
Wii U:
CPU 3-core 3 GHz IBM POWER 7, underclock at 1.64 GHz a core on pre-install firmware
GPU, it's a HD GPGPU and it does pretty much all the work. Leaving the CPU to just do stuff like online functionality & streaming onto GamePad controller. Anyways it's clocked at 800 MHz.
Vertex Performence, more then 1,000,000,000 (1 billion) polygons
Shader cores, more then 450
Open world, it does somewhere from 5 times to 25 times more open world then Lego City Undercover with full polygon graphics and vehicles traveling at least 100 mph, maybe faster.
price $300
Hope that helps.
I should mention that the Wii U has more 3rd party exclusives then the PS4 & X1, and so does the 3DS.
