I see fanboys saying the puma is good but compare it to the m10 . i see them saying the aa track is good but compare it to the us track.
The FlaK HT is extremely good at what it does, so is the Puma.
Let's compare the M10 to the Puma:
1. M10 is doctrinal
2. no smoke
3. no vet 1 ability that renders tanks useless for a decent amount of time
4. available after 7 CPs (much later than the Puma)
5. doesn't spot for itself
The only advantage the M10 has is its higher pen. Its armor is 120 which means that it will get penetrated by any axis unit anyway (apart from the Puma which has a chance of 66%).
Its higher pen is irrelevant because it has to fight against heavier armor (Panthers/JPIVs) when it arrives.
The AA HT is good against inf and light vehicles, the FlaK HT is extremely good vs infantry (+ it has smoke).
The FlaK HT doesn't have to show its rear armor to fire. The FlaK HT only costs 55 fuel whereas the AA HT costs 60 fuel + teching.
I really don't know why you think these Allied vehicles are better than their Axis counterparts.