Let's be practical. What computer monitor is available with that resolution which is marketed to the mass market like the iPad's retina display is?
I'll be practical when iPad 2 users stop using the resolution vs lack of effects in Nova 3 like some boast.
And the fact you acknowledge that the resolution is that high as to question a monitor which could run it, only further a) shows the power of the Quad Core GPU and b) makes it perfectly clear why the graphical effects couldn't be run on top of the resolution.