Woa, did not know that!! Thanks!
Which, imo, HTC is taking the safe road with and not giving credit where credit is due. For instance: the M4A3/75mm should be earn more OBJ points than the Firefly and M18, because it was meant to be used at an HE platform first and foremost and the other two were TD's. ESPECIALLY with the Calliope mounted on top. It would be more difficult to do but the Panzer IV F/1 (short barrel) was specifically a infantry support tank and was meant to hammer all things but enemy armor. The way HTC has the OBJ scores currently set up, at least with the OBJ ratings is to reward those with the most difficult job of getting their role accomplished with the highest or near highest OBJ score available (B5N, Boston, SBD, D3A, IL-2, etc).
Me thinks HTC would want to reward those vehicles and aircraft first off that actually performed the specific roles of infantry support, then those who performed those roles but are at the back of the line in efficiency in AH (SdKfz 251), and then give those specifically NOT designed to engage anything but enemy armor a lower OBJ score (TD's), and then the "MBT's" the average. They did it with the aircraft why not with the gv's?