IIRC
Things went strange, fire power wise, when they changed the bf110 Bk3.7 loading.
As for more armour, I see no difference in its toughness compared to ordinary Stukas in game.
Perhaps someone might look into the G1's encrypted data and see how its comparing with FM/DM of the other Stukas and what the Bk3.7 on it's set to, same as bf110 ?