1. Same hull armor thicknesses as IS, yet much worse mobility. Even though the front is a little better angled in places the sidescraping is the same. Turret is thicker but way flatter...… IS has equally effective (but slightly different) armor but better mobility.
2. It lights up like a bloody torch - in 11 battles I have been set on fire 6 times, twice I got lit twice in the same battle