Once I rocketed a Tiger 1 and killed it in the F6f. I thought there was a glitch or something. I was in a very steep dive. and was getting ready to roll around to get lined up to drop bombs.
Angle has a lot to do with it. In fact, the right angle on a Panzer can get hilled by an F6F's 50 cals. You have to hit it JUST right from just the right angle.