[Marcello]

"I won't use T-64B in here as it's more of a counterpart both on timescale and in capabilities) to Leopard 2."

I was commenting on mechanical reliability.Supposedly T-64 was very unrealiable initially (possibly some literally self destructed due to autoloader malfuctions, or so went the tale) but the issue was more or less sorted out by the time the main production versions A/B came online.I agree that the T-64B is later.

"Remember also that the mobility issue may not be as severe concerning Chieftain"

I agree that in principle the Chieftain had sufficient mobility.What concerned me was its reliability, that was my point with "if you can get there" comment. Unless of course all the claims about chronic engine overheating and transmission breakdowns were somewhat exaggerated.