Because it runs Android 4.0 and we don't want a sluggish tablet.
It's not about taking advantage of the hardware - which although decent is by no means powerful by todays standards - it's about getting something decent for the money.
You can get lesser tablets (600mhz) running Android 2.3 for similar money but why would you want to?
Also with 2 DS thumb straps you could play one of the Asphalt games on it, possibly even Dead trigger if it runs ok. I'll test some touch games on it when it arrives, basically the ones that use swipes relative to where you touch the screen or just pressure on a particular side of the screen (like Asphalt) would probably be ok.
Ones that extensively use virtual pads/buttons would be pretty bad though so that rules out all emulators.
GPD Win, GPD XD 64gb, PlayGo, RS-90, 3DS XL, DSi XL, GBA SP, GBBC Clone, Gameboy Pocket c/w screen mod, PSP Go
Medion Erazer, Toshiba Z20t, Dell Mini 9, Psion 5MX
Tons of other old laptops and tablets.....