This is what I've been saying. The Jackson isn't some unkillable jack of all trades vehicle. It is vulnerable to all sorts of infantry and crewed weapons plus a few vehicles if used correctly. The (alleged) problem is that it isn't effectively countered by tanks because Axis players like to build armor and expect it to be supeiror to all allied vehicles.
A tank cannot effectively counter a tank destroyer...OMG! Get out the nerf hammer!
List of tank destroyers tanks can counter is the enemy is caught off guard:
Su76
Su85
Puma
JP4
Jagdtiger
Stug
Elefant
Firefly
M10
List of tank destroyers that, even when caught ou of position have a great chance of making it a fair fight at the very least:
Jackson
The jackson is too forgiving to be as potent offensively as the other TDs, yknow the ones that CAN be countered by getting caught in a bad position. The ones that can't slug it out, or flee or slug it out WHILE fleeing and that actually swinging RNG into its own favour.