Puma is an armored CAR.
Bofors is a 40mm AA gun.
If axis 40mm AA flak penetrates TANKs, what makes you believe allied 40mm flak shouldn't penetrate CAR?
anything lighter then ostwind is and should be ripped apart by it when it comes to armor.
Flak truck is problematic, that's right. It even frontally penetrates Shermans. But I have a problem with Bofors melting Pumas like crazy. I wish I had the replay (It's easy to test it though). I swarmed Bofors with 3 Pumas, I wasn't aware of its stats. I lost one and had to fall back to save the other 2 with low HP. Shit was crazy fast.