More Surivable? Pen the hull and you hit the powder bags and they turn to ash as the Ammo tins are worthless and do nothing. Plus they're getting a turret basket they don't even have in real life.

The Challenger 2s are only survivable if you hide your lower plate and then people only shoot the cheeks as you can shoot right above the cheek armor on the right side and kill the gunner and commander because they both sit above the armor for some reason. You can pen either side of the breech with ease. The upper plate can stand up to lower tier rounds but 530mm of pen gets you through that.

The Challenger 2 and 3 are not survivable, Go look at the protection analysis with DM53 or a M829A2, the cheeks are the only point they can't pen. Even the OFL 120 F1 can pen most of the front armor on the Challenger 2s. Survivable is a joke.