Resolution isn't particularly tricky. You also have to keep in mind that your eye can't resolve tighter than one arcsecond anyway so stupid crazy resolution doesn't buy you much. The cool thing about their approach - from a display technology standpoint - is this sentence:
Ning's group has already shown that their structures could cover as much as 70 percent more colors than the current display industry standard.
That means they expect to cook the shit out of the gamut you're used to:
I'm "klein blue" because when I first saw an Yves Klein at the San Francisco MOMA, I got "modern art." He created a color of paint that simply can't be reproduced via offset printing or existing computer displays. International Klein Blue is beyond the gamut of our technology. Laser projectors get closer, at least. The ability to use white lasers to reproduce color means that our color reproduction increases radically.