So here's the issue:
I have a 3rd-generation iPad (model number A1403). On the linked Apple site, there is no evidence that the 3rd-generation iPad has a retina screen.
However, when I run my SpriteKit-based game, my @2x images are displayed. Therefore, I believe that the iPad 3rd-generation has a retina screen. Is that correct? (And Apple's site just omit's that info?) Is there a better way to check for retina?