Since Leopard 2 PL is the only non-Russian tank you currently possess, I can see why you would hold that opinion; as a Western tank, it has many qualities and advantages you would normally not find in most Russian tanks (good gun depression and elevation angles, good reverse speed), so it may look like it has an edge then.
However, I assure you that, as soon as you played a few matches with Leopard 2A7V, Strv 122B+/B PLSS/A, Leopard 2A6, Challenger 3 TD or M1A2 SEP/SEPv2 (even on their current state), you would see how lacking 2 PL is compared to these hahah.
Basically, those tanks have EVERYTHING Leopard 2 PL has, except with 120mm higher penetration and 100-450mm KE stronger armors on a 60º arc.
I mean, I would have no issue with 2 PL being at its current state, but my issue is that this tank, on its current state, is, as of now, nearly the same BR as the very best tanks in the game.
Like… if max BR was 12.0 and Leopard 2 PL was 11.3, yeah, I could see that. But, right now, it’s 11.3 when the top is 11.7… as of now, it has zero reason to be 0.4 BRs below Leopard 2A7V.
That’s why I support the addition of DM53/63; not just for historical reasons, but mainly and specially, for balance!