I went to the store yesterday and tried the rMB. The screen was definitely far nicer than a MacBook Air, but noticeably grainier than my 2012 rMBP or iPhone 6+. Should this be the case? It was hard to notice at first, but when I went to the NY Times website, and looked closely at the text, it wasn't perectly sharp as it would be on my iPhone. The text was grainier if you looked closely. I adjusted the Display settings in System Preferences and the "fuzziness" (relative to the iPhone 6/rMBP) remained. Are the screen specs for the rMB supposed to be comparable to other retina screens?