stevefromio: Yeah, mobile devices can do 3D render. Great.
Nevertheless, Arima's right, those textures aren't bigger then 2048X2048.
It's even unlikely that there are this size.
Also, it's indeed a nice tech demo, but it's not a game. It doesn't have IA calculations, collision checks, etc...
Mobile devices don't have as much power as modern desktop computers, it's not an excuse, it is a fact.
Boundaries are being pushed, sure, but still if you want to make a game for mobile, design it for mobiles. If you want to make a game that take advantages of decent modern desktop computer, design it for modern desktop computers.
Those are different beasts with different limits and ways.
Once again, read the blog article Arima has linked at the end of his post to understand a bit more about all this.