Some more food for thought, for those saying that the Jackson being unreliable against heavies:
The Jackson has a 53.33% chance to penetrate the frontal armor of a Tiger at the max range of 60, assuming no vet 1 ability popped.
The Panther has 58.66% chance to penetrate the frontal armor of an IS-2 at the max range of 50.
Yet I never hear complaints of the Panther being unreliable against Soviet heavy armor despite extremely similar chances to actually penetrate enemy heavy armor. Additionally the Panther has a longer reload time and a more punishing moving accuracy penalty nor the fact that it takes the Panther 7 penetrating shots to kill an IS-2 but it only takes a Jackson 5 penetrating shots to kill a Tiger. And the Panther is more expensive.
Are you seriously comparing the Panther and the Jackson? No one whines about the Panther for 2 simple reasons (and these are also the reasons why this comparison is extremely dumb),
The panther doesn't have to bite and run in fear of any sort of AT destroying it for a minor slip, it can stay a lot more in the fight and at closer ranges if extra at isn't around, more shots will be fired, on the other hand the Jackson will get one shot off before the enemy goes behind a building or the jackson is forced to retreat most of the time, if that shot doesn't penetrate or misses or hits god knows what it's a much bigger deal than a failed shot of a panther.
Now the second one, are we seriously going to compare the one and only engagement where a Panther can get its shot deflected (against an IS2) to Jackson and Axis heavies? I'm not going to say it's rare to face an IS-2 but it's much more uncommon than seeing the inevitable Axis heavy or panther, an axis player will not have to always face an IS-2, most of the time it will be the usual t34-85, on the other hand a USF player will always face the inevitable Tiger/Panther supported by the usual schreck screen, paks or both.