The critical factors for seeing details in images is color, contrast, saturation and resolution - resolution coming in last. For plain text, it's resolution.
Resolution as a spec can't stand by itself - you also need screen size and distance from your eyes. If you take any screen, of any size, and stand far enough away from it, you can only tell if it's on or off - it becomes effectively, one single pixel. (That's a silly, extreme example, but it helps illustrate the point.)
In your case, the Nexus has more dots - but it's also a larger screen. Being larger, you may or may not relax and hold it a tad further away. I know I hold my qHD 4.3 phone a little further away than my 800x480 3.7" phone, for example.
Everyone sees differently and has different needs and uses. Some will claim you can see dot differences, some will claim you can't - we're not all made the same and also, we age, and our eye tissues get less responsive (also varies when and how much for each person).
I have the qHD Evo 3D myself, and I've had folks tell me their SAOMLED displays with lower resolution seem sharper to them - from that, I would simply guess that they have a different sensitivity to saturation than I do.
In general, using SMPTE specs, if you hold your phone about a foot from your face, I'd say the majority of folks wouldn't see a dot difference on images.
But that's statistical - I generally believe people when they give their observations.
So, there's really no wrong or right answer here - it's quite individual.