A Comet (800 hp) that dies to 4 shots (200 damage each) and almost costs the same as a Tiger if you include the hammer tech would be utterly useless sure it has better speed and nondoc smoke/phosphor at vet1 but it will be hard to make it work vs tigers so it might only bully mediums and some infantry and gets hardcountered by heavys or tankdestroyers.
Same goes for t34/85, M4A3E8, Sherman Bulldozer (both variants) (hp between 720 and 800 compared to 640 for mediums) so pretty much every single premium medium tank will have a worse time while fighting against Tigers. I think it might go that far that their cheaper counterparts will not only more efficient at fighting vs heavy tanks but also nearly as effective.
Should the game go on long enough, how many tigers can on have on field at any given time? Now how about comets, 85s, e8sor dozers? And how many 60 range tank destroyers are lined up behind the line tiger? The tiger is not akin to a premium medium because it's a HEAVY tank, a heavy tank in the ONLY faction in game without a 60 range TD, the only faction actually who has a proper TD that is mutually exclusive with their heavy tank...