Yes, well once I got opengl working on my rpi2, it went from 4 frames a second to 20. My raspberry pi 1 went from 2-3 to 10-12 frames a second.
I think this zero version is also the same as version one except it is also overclocked... So I think it would work ok if acceleration is also working.
Considering the cheapest hdmi screen
I found is $20, it would cost $25 for this, and there are quad core
tablets for $35... so maybe a tablet is still cheaper.
The advantage to the pi of course is that it is modular, and that I can replace the backlight with a lot more powerful leds to make it daylight visible. Going to all this trouble, it probably makes more sense to just use an odroid c1