I would like to replicate your results, but I have to ask... was this before or after the composite armor research, was this single player or server, and if server was this against another a player who could’ve ranked up?
It's totally balanced, especially when paired with a 500 dollar Tank Commander for dynamite spam like a total pleb. What are you all talking about? In fact, it should be made FASTER and STRONGER for the fantastic gameplay afforded by someone with no skill driving into your base to spam dynamite.
While on the topic.
The 9K22 Tunguska can kill the grizzly with 1 missle to spare assuming you're able to shoot at it for 7 seconds and land every single hit. This problem is only furthered by the long reload time of the Tunguska. I vote that the armor class be changed as well because it can bypass every single defence in Nod existence besides the Obelisk.
The Sheridan 105mm (That $700 tank where you can also buy the grizzly) has zero armor. It can be killed with 20 shots from a Mantis Tiberium Rifle. I understand as Yap said it was made by aluminum but it is beyond bad.