General tank design is very similar to T-72, so there should be differenf way out. The only problem is that it wouldn't be easy - you'll find yourself clamped between autoloader's carousel, your seat, and gun's breech. So, if you need to get out fast - you're in trouble.
In fact we can't know this for sure, since we are not aware neither of ZTZ-99 armor quality, nor of it's firepower (though this doesn't matter much - all modern guns have pretty similar performance). As for muzzle velocity - it is not the only factor that defines shell's effectiveness. The good example is american M829E3 - it's velocity is 1555m/s, but still it pierces 800mm at 2000m. But enough of this.
What i am really interested in is WD396 engine. Is there any confirmed info about it? Pictures? What is the engine's structure? Some sources say it's a copy of MTU881, is this true?