...
The panther is not a true specialist.
...
It has the main gun of TD, it also has HMGs. Call it what you like but one can not relay on it to counter infantry.
Ostheer Panther with HMGs or not is simply not a cost efficient unit (with very high Pop.)
And again my original point is that one must first find a role/balance Panther and then balance the Comet.
and similarly, the comet's main gun might be similar to the gun on the other medium, but the t34, sherman, panzer4, and cromwell are better at AI due to mg, reload, or AOE.
It also has grenades, WP and 45 vision and can easily kite AT PG, AT SP or AT ST. It can even counter counter ATGs better than most other tanks.
So I am not really sure what someone should expect from this unit.