And these things called ZiS guns, don't forget those. A group of three will either kill it or force it to hide in it's base. Same for the JT.
You can easily win a slugfest against these things.
Step 1. Get machine guns.
Step 2. Get infantry.
Step 3. Kill supporting infantry.
Step 4. Get AT guns.
Step 5. Shove Axis player off star.
Step 6. Swarm with 2 or 3 mediums.
Step 7. Win game.
That's how you deal with a supported one. These things are supposed to be the linchpin of an AT defense. If it is properly supported, then the Axis player SHOULD WIN, because he has outplayed you, kept his units alive, and has a cohesive defense around the stars that he has asserted dominance over. IT IS THEIR ENTIRE PURPOSE IN THE GAME TO SHUT DOWN MASSED ARMOR PLAY BY THE OTHER TEAM. Nerf their armor, and the other team can just bumrush it with tanks, trade 1 for 1, and the unit is utterly useless.
One that's not supported is even easier to kill.
Step 1. Swarm with 2 or 3 mediums.
lets see the penetration chance of the Zis-3 and the 57mmAt gun against both the elefant and the Jagdtiger
Zis-3 Penetration chance against an Elefant 50%/47%/45% Chance of penetration of frotnal armor
Conclusion,the Zis -3 is unreliable at countering the elefant duo to unreliable penetration
(remember only close/point black range has 50% at penetrating the frontal armor of the elefant)
Zis-3 Penetration Chance Against a Jagtiger 36%/34%/32% Chance of Penetration of frontal armor
Conclusion,the Zis-3 cant in any way penetrate reliably penetrate and threaten the jagdtiger
57mm AT-GUN Chance of penetration against an Elefant 35%/31%/28% Chance of penetration of frontal armor
Conclusion,the 57mm at gun is awful at fighting the elefant and cant in any way pose a threat to the elefant
57mm AT-gun Chance of penetration aagainst a Jagdtiger 25%/22%/20% Chance of penetration of frontal armor
Conclusion,the American AT GUN is terrible against a jagdtiger and should never be used as a way to counter the Jagdtiger cause its a waste of resources
remember that both AT guns will never face the rear armor of both Tank destroyers so adding rear armor penetration values would be a waste,also the american at gun cant in any way penetrate both tanks and AP rounds wont help much to change it.
so AT gun walls dont work and is a waste of resources
AT handhelds have even lower penetration chances then both at guns and do less damage then 100 damage(80 damage)so even if your lucky and penetrate tanks with alot of at handhelds you wont do enough damage to destroy it or even threaten them cause of High HP values