This will actualy affect the outcome of your battles a lot and your calculation will be off.
2 inf + 1 bomber have the same attack value as 3 art. But if putted against 3 inf the 2 inf + bombers comby has a slightly higher chance to win.
Of course, because you’re losing 2 attack power with the first two casualties instead of only 1, and the 4 remains until last instead of a 2.
First of all, my approximations with carriers or tacs are done normally in much larger battles than 3 on 3 and the error is in fact negligible. Again, the point is to get a probability distribution which Triple A doesn’t provide. None of the good calculators I’ve found have been updated to accommodate G40.
My approximations using bombers in place of infantry/AAA is pretty accurate, because in almost all cases those units will be eliminated in the first round of the battle.