I don't know about ridiculous but I'll offer my experiences with both this week. I am on my second 2013 haswell AIR and both of them have had -
1. Terrible Screen Flicker in Photoshop CS6, rendering it almost unusable
2. Volume fluctuations when streaming video
I also bought a refurb 13" 2.5 ghz rMBP a week ago and it has totally surprised me. I fully expected "laggy scrolling", "overheating" etc. but so far the machine is noticeably faster than the AIR in almost every respect. The retina opens finder windows much quicker, especially noticeable when opening shared folders on my network. It also loads web pages faster. In every aspect of working with the machine it's smoother and faster than the AIRS have been which has surprised me.
I thought that since the AIRS have I5000 graphics that are supposed to be 40% faster and the new quicker SSD's that I would expect them to pop open windows quicker etc. This is not the case. Regarding heat in the retina, the 13" one does not generate that much. It DOES get warmer than the Air which is amazing in that it's almost completely cool even when streaming videos for an hour. The retina is a bit warmer but not too much. Remember, the 13" retina has the cool air vents on the side as well as the back. The Air looks like it only vents at the back..where does it pull cool air in from?
Finally the retina has retina! It looks a lot better than the Air, but seems a bit more reflective (bad thing). It took my eyes a couple of days to get used to the retina. At first I actually found it more difficult to read text on because it seemed like my eyes couldn't focus on the screen properly or something. That seems to have gone away now. Having said that, I think the Air screen isn't that bad. It's certainly washed out in comparison, and it does look fuzzy and not as sharp as even my girlfriends 13" glossy plain old macbook pro, but it is a little higher res than her MBP and the screen is "good enough".
So, in my mind they are totally different machines. I'm having a tough time deciding which one to keep. I love the retina screen and the machine runs faster and smoother overall BUT -
1. The Air form factor is NICE. That tapered edge makes it much more comfortable to type on than the thicker edge of the rMBP. Believe it or not, this may be the thing that makes me keep the Air. Comfort in doing what you do on a computer (type and read) is a big deal. In the reading part however, the retina has the edge..
2. The battery life is REALLY REALLY nice to have. Although the rMBP is not bad, the battery life in the Air really is a game changer. I don't even think about battery life on the Air.
3. Dead Cool. The Air has never warmed up in normal use at all so far. And I mean literally sitting in your lap it feels like cool room temperature aluminum. It did get a little warmer when I was rendering some video in Final Cut Pro X (it was running for about 6 minutes at that point).
4. The half pound or so of lighter weight is nice to have
So, decisions decisions. Oh, I did find one issue with the rMBP. I went to that webpage that does the ghosting test and the screen DID retain a ghost image for about a minute. It was only noticeable on a grey background though. Doesn't even show up on white web pages etc. If that is something that would get worse, that would be a big negative for the retina, but the way it is now it seems like a small issue.