It's incredibly easy to see the difference. Cell phones used to have low-DPI displays, and I don't think you can find anybody who wouldn't be able to easily see the difference.
Retina displays have been around for more than 10 years now and are just much better than low-DPI displays. Especially for text and user interfaces. For movies or gaming it doesn't matter so much.
Retina displays have been around for more than 10 years now and are just much better than low-DPI displays. Especially for text and user interfaces. For movies or gaming it doesn't matter so much.