I was never losing near parity with you and that is not the reason I changed my ways. First on turn 14 or so, I was too aggressive in my airbase placement and you managed to bomb my fighter airfields, which I had been careful not to let happen before, and that was a big hurt with 150 fighters lost if I remember well, even though you lost a lot yourself to AA and dogfights (maybe that was what you meant with 'near parity').
Anyway, after that famous turn when I lost so many fighters in one go, I brought back my airfields beyond 20 hexes and used them only to help for the most important ground attacks/support and also some interdiction.
And when mud hit, I just retired most of the air groups I had on the map first to let everyone rest, because most fighter air groups had some accumulated fatigue, and also I didn't needed them to support ground operation for now, so I just seized the occasion to save trucks. I feel these trucks will be more useful during blizzard. By the way, I still had a few air groups on the map, mainly in Crimea to try and interdict your naval movements to/from Sevastopol, but for a reason I ignore, they never did their job. And I know they could since the same air groups from the same air bases did interdict some of your naval shipments in earlier turns. Anyway, too bad, and since they didn't have anything more to do, I also sent them to NR last turn.
Another advantage is that it's also hard on your trucks to keep so many guys on the map during mud, so I have a small return there also. And of course your air force also suffers a lot... added to what you already lost in the mud turns, you have almost 1000 air frames that are damaged. So the 250 planes lost climbed to 293 this turn if we add in your logistic phase, and there will be more yet to come. 293 good air frames gone for none of mine... It's a really good ratio I think!lol! I know it opens wide the door to some experience gain on your side, but it's a choice and a trade off, as anything in this game is.
Of course you never lost anything close to near parity overall, that's not what I said. I'm referring only to your turns on your ground support for your attacks where I was taking pretty massive losses compared to you pretty consistently but then on turn maybe 16'ish or so the losses started to be quite a bit more even (well, relative to the 3-1+ they had been previously so I use the term parity pretty loosely!) on your turn in your ground support. It was around this time when you had said in our emails discussions of the game that you were tired of seeing your bombers go down in flames or something to that effect. My point was, if you weren't flying as much ground support as you had been previously and weren't intercepting me any longer or giving me any opportunities to get near your air bases, I didn't need as many fighters as before, so I switched to building more bombers as I lose a ton of those bombing your units. I wasn't implying overall that air losses were near parity, I don't think that will ever be the case.
As for your naval interdictors, I haven't even done much sea movement to begin with and got interdicted several times. So if they weren't doing their jobs after that I think it was more that I wasn't moving very much, a few turns nothing at all.
And absolutely, my air force is taking an absolute beating right now while yours is on vacation in the Alps. Hence the entire point of the thread - are the losses worth the casualties they're inflicting? There's no disputing the numbers, Soviet planes are going down in droves during turns where they don't even see a German plane at all. Is it worth the losses to kill German soldiers? I feel like it is, but really I have no way of knowing for sure.