The Panther needs a very small tweak and I hope the balance team gets it right. But it's not that bad as people say it is.So the thing is, this was originally supposed to help team games become balanced. Lots of units that do not even surface in 1v1s turn the tide in 3v3s+. Panther is one such unit. In a 1v1 it is murder to stall until t4, so the Panther naturally underperforms when you consider the tech costs involved. In a team game you have more or less the same amount of territory points to fight over, but 4 times more people going at it. Having a mobile kampfgruppe of Panthers is practically uncounterable for cost by the Allies.
Now, I am not saying that the Panther is in a good place or that it should be nerfed into the ground. Frankly I can think of no solution that would equally please 1v1 players and 4v4 players. So keep that in mind. Just offering perspective.
I feel that the Panther was not nerfed based on its 1v1 performance, but based on the fact that a flock of Panthers roaming the battlefield are a hallmark 4v4 strat.
When there is only 1 Panther (which is usually the case in 1v1s), if you snare it, you can at least exploit it. In a 4v4 you cannot dive to kill it with tank destroyers (since the other Panthers and God knows what else will pounce on you) which means damaged panthers can keep reversing with its monstrous frontal armour. Which translates into a lot of veteran Panthers roaming the battlefield at the 35 minute mark, and that is usually followed by a "gg" typed into the all chat by the allied team..