Fair, however in many cases, they share the same mechanisms, such as caliber, autoloader, and the ability to launch ATGMs as well as APFSDS. This is also shared by many high tier Chinese tanks. I do get your point, that there is little shared difference in many other circumstances (mobility, turret, ERA type). Obviously the Chinese derivatives of the T-72 aren’t going to be the exact same, but certain qualities are shown that are related to the T-72, which highly influence the play style of high tier China.