But it still part of sherman tank family and it sounded like you treated it differently.
And like i said, “…with the right ammo type”. Current ammo type is M72 AP-T shell witch is terrible at best(±88mm of penetration at 100m with no explosive filler), for comparison both pz IV have APCBC with explosive filler and penetration of 140-130 mm at 100m
76mm M1 cannon used on sherman M4A3 76 had 3 in. whitch roughly translates to 76.2 mm
If we’re being fair and realistic, the M4 family with the 75mm gun is the counterpart in capability to the Panzer IV H. The Panzer IV series has a better gun but worse armor than the Sherman, but both can put a shell through the other at pretty much all ranges through most of the front of the vehicle. With angling, the 75mm M4A2 should be stronger than the Panzer IV, especially at the ranges you engage at in Enlisted. Unfortunately, US tanks are pretty heavily undermodeled without stabs or decent ammo so this really isn’t the case at the moment.
Why they added the Jumbo is beyond me. It is closest balance wise to the Tiger E, with King Tiger levels of armor but a 75mm medium velocity gun as opposed to a long barrel one. Not authentic to a landing map and (if modeled correctly) horrendously overpowered against anything but a Panther with APCR.
The M4A3(76) is a superior vehicle to the Panzer IV H, with a more modern gun, better handling, and armor. It would be closest in balance to the Panther D/Tiger 1 since it could basically mission kill both easily from the front (Panther through the gunner side of the turret, and Tiger through basically the entire frontal glacis) while the Panther and Tiger could do the same to the Sherman.
You don’t ask for the right thing, what you are asking for is A NEW TYPE of shell not just change in the current shell.
You are asking for the APHE shell that not only gives HE filler it also gives more pen (from 87mm to 104mm)
The APHE round (M61 and M61A1) also happens to be what the Sherman was issued from 1943 onwards IRL, including as the standard issued round for 75mm Shermans for the Normandy invasion. Solid shot AP (M72) had ceased to be issued to frontline US forces a whole year before the Normandy invasion.