I've been thinking about this more. I would add that mounting
the gun higher up in your profile is also an advantage. The distance
from the main 75 to the top of an M3 Lee is a lot greater than the
distance from the 75 to the top of a M4 Sherman. This means that the M3
has to expose more of itself to shoot over a hill. (it does have the
small gun in a turret up high).
After playing more, I've figured out the style I like is a 'sniper'. A slow firing, but powerful gun that can kill in one shot. I use it from a stationary concealed position, and then pull back to allow the gun to reload. This means I generally use a large caliber, slow, explosive shell, like a 105mm vs a 75mm. The disadvantage is that these rounds usually don't have the armor penetration of the smaller, faster rounds, or the accuracy and speed in aiming (no idea why this is a factor, but it's in the game).. This makes me favor a side or rear shot. Most tanks have the choice of one vs the other.
I also prefer a strong front armor at the expense of side and
rear. So, I'm leaning towards tank destroyers. With the interface on
the iPad it's too easy for me to point a turret in a direction I'm not
facing, thereby exposing lighter side armor. However, rotating a turret
doesn't reveal a tank that's hiding, while rotating your fixed gun tank
destroyer on target does.After playing more, I've figured out the style I like is a 'sniper'. A slow firing, but powerful gun that can kill in one shot. I use it from a stationary concealed position, and then pull back to allow the gun to reload. This means I generally use a large caliber, slow, explosive shell, like a 105mm vs a 75mm. The disadvantage is that these rounds usually don't have the armor penetration of the smaller, faster rounds, or the accuracy and speed in aiming (no idea why this is a factor, but it's in the game).. This makes me favor a side or rear shot. Most tanks have the choice of one vs the other.