I forgot to mention in my previous post, blowing up fuel tanks certain conditions. It doesn't happen too often but i've done it a few times, you first need to rupture the fuel tank and let it streak some fuel to empty it a bit, so that there's room in it for gasoline vapors to expand.

Then, if you give it another burst and your incendiaries connect it explodes. I've found out that pausing between bursts increases the chance of this.

I think I read somewhere that the collision boxes for the bullets and planes are smaller in COD too.
I have noticed IL2.46 seems way too easy after playing COD. I played a mission on IL2.46 and shot down 5 hurricanes and 2 spitfires before my bf109E4 ran out of ammo!! That would be impossible in COD.
Also the Browning .303 and the MG17 .312 rounds are not very powerful, just rifle caliber.
Il2.46 you often flying planes with large canons and 50cals...

I can`t say I like those slow cannons. Can`t remember when`s the last time I hit anything from a fast angle. In CloD I`d really rather have the MG17 in the wings. Cannons may be good for shooting bombers, though machineguns seem more practical.