I dunno. It is and it isnt. I mean, if you fly older, less lethal planes as a personal challenge, then it has nothing to do with sportsmanship. But if you do it because you want to equalize things for the other guys, or make it better for them, or to handicap yourself for their benefit, then yes, I'd say thats a sportsmanship thing. Like switching sides, or staying out of a good 1v1 or 2v2. Unless I'm in a "base defense" mode, or assigned to a CAP, where I shoot anything red as fast as I can get it in my sights, I always try to ask first before jumping into an even fight. Now if someone asks for help, of course I'll help em out anyway I can. Otherwise, if I see a 1v1 I figure both guys upped fighters looking for a fight, found it, and I'll go find my own.