well that is their own thing. if they have same level weapons as all other people in game then it is ok. cause that way you can play with older level equipment without worrying about tryhards with 3 full stg44 squads on other team. or take out low level tanks like stuart without worrying you wont be able to do anything to tigers. you can enjoyably play with low level weapons even when you have unlocked higher level ones and low level weapons wont be obsolete.
Well the point is how do you adjust the match for players that use both low and high tier weapons in the same battle?
well you can put highest level equipped weapon as weapon level they are at. what is the point if you have bolties, when you have tiger out.