No its pixelated at normal resolution. Lets not be fanboys of our given tech. I would never argue that the rMBP is a speed demon or that it plays games better than any other computer. Mostly because its not true. The MBA screen is mediocre at best. Im not trying to put it down its just the truth. Post a pic of text from your air at normal resolution and you will see the pixels.
No, you don't get it. You posted a pic that is so zoomed in that even the Retina is pixelated. Of course the lower res screen is going to look really pixelated at that point. It's inevitable.
Btw, I just did a little test with my 13" air. Very slight pixelation(way less than the retina pic you posted) occurs when I put my face midway through the keyboard. My eyes fail to focus before any apparent pixelation occurs.