At long range, 200 / 310 = 64% to pen.
In order for 2 Jackson to twoshot a Panther all four shots need to penetrate. Chance for that is (0.645 ^ 4) which is around 0.13
So your "most of the time" boils down to 13% of the time or one in eight encounters.
One,ur ignoring 2nd shot takes place at mid or close where panther tries to close in to actually land hits on jackson.There chance goes up.
Two,even if its takes one more shot,its a roll for the jackson against the shit DPS of panther which can maybe get one 160 dmg shot off between the interval of 4rth and 5-6th shots.It will be a total faceroll.
And whats more getting 2 jacksons is easier than getting a panther as ost with its tech costs.
Tiger is already helpless vs jacksons,now even more so.
Pz 4 -lol.
THen there's the p-47 skillplane 'backup'.
Already we have no lategame inf or answer to paras with LMGs.
Artillery locked out and shit.
Earlygame teching still pathetic.
Overall it is a meaningless patch for ostheer.It would be best if relic removed ostheer from the changelog altogether than try to fool people into believing something substantial actually changed.