US 20mm buff means that you can penetrate most tanks from top down and even at some pretty drastic angles. You can top down Panthers, Tigers, T-34 and even Sherman tanks.
US Mains in War Thunder can now rejoice as they now have something almost as effective as 30mm HVAP from the Mk103 cannons from Germany and the 37mm and 45mm cannons from Russia planes.
I really don’t think it’s too over the top but I wouldn’t complain if it lost a few extra mm of penetration!
Oh, this buff is SO good… I don’t think you even need to carry bombs anymore!