Agreed wholeheartedly. Some engines can't be run at maximum combat power more than a minute or two before blowing up in your face. Overheats are just LUDICROUSLY overdone.
First, no engine in Il-2 will "blow up" if overheated for over a minute. Some aircraft in Il-2 will never overheat. Some overheat a bit easier. It's not all that complicated or difficult to deal with "overheat".
Second, in the AH main arenas aircraft fuel consumption is manipulated "as a game play device". In certain planes in Il-2 overheat discourages players from taking off and flying around for ever on full power. That is the same justification Hitech gave for the high fuel multiplier in the AH mains. In Il-2 there are a couple of different things that effect overheat. One import thing is the "atmosphere" of the map you are flying on. Map builders can set the "atmosphere" however they like. This is why on some maps overheat is more pronounced. In addition there is a separate setting within the FM of each aircraft. My squad mate Howlin is one of the few that understand every line of FM data in Il-2. He helped build the Fw 190 A-3 as an example and has worked on FMs for many other aircraft.
Anyway, games are just that - games. There is nothing "real" about either game. Nitpicking at one game play device while ignoring another is silly. Fly the game you like but there is no reason to make things up or pretend the warts on one game are uglier then the warts on the another. AH has plenty of warts as well.
Wotan