I find plenty of reason to complain about allied related stuff too(stock 34/85 ideas, SU-100, pershing to name a few).
The difference is you are pushing for new additions on the Allies side, but arguing against them for the Axis side.
And last but not least, we're talking mp, which happens in 44/45 years, where P3 were undergunned and outdated, their use was limited exclusively to occupation forces instead of frontline troops, so it wasn't even used in the period we have in mp.
The Panzer III was in service until the end of the war, the Model N was used as an infantry support tank. Besides, Relic never let rarity stop them, you should know, you've complained about that before!
There, I've elaborated and covered both, balance and historical reasons why P3 is even less likely then hotchkiss.
A Medium Tank last modified in 1943 is outdated, but Light Tank last touched in 1940 isn't? Now you're just trying to troll.