Congratulations, you have just discovered the "plane train". This tool is particularly effective in 10v10s, when you don't have to take care of as large a front, and thus can let your team mates carry your weight, as you build up a massive fleet of bombers. Supplement AAA along the entire frontline of the map, disabled "Winchester Evac" to guide your bombers more precisely as they extract, and sprinkle in some fighters here and there. Voilà: No amount of 88mm or even Flakvierlings will do shit against you, which means you have just won anything but the tank war.
Thats why i advocate for more aoe effect of aa guns in the air. this would make plane trains much less effective.