So, you're basically saying that it is wrong that 4 or so flak 88's (your statement indicates that it might have been even more), which are a hard counter against air, are able to shoot down air instantly? They are amassing 480 points of hard counter against you and you complain about the fact, that it did work?
Would it sound wrong to you if I were complaining that half of that point sum (240 points) in paks is able to insta kill my precious german tank?
Several points wrong with your comparison
First off, most air is 200pts+ which is all now rendered automatically useless
Second, the thing about 88's is they don't just counter one thing. If ALL they did was counter air, sure that would be fine, but they are all 3: an AT gun, an AA gun, and an infantry support gun all in an incredibly hard to kill package
So that 480 points is not JUST going towards anti air, that is all contributing to their defensive line VERY effectively at the same time.
A series of at guns does not immediately render the battlefield unavailable to any and all tanks. If there was an at gun that could shoot through trees and obstacles, and even on misses gave a tank half panic, then yes, the comparison would be viable.