From a sample today of 10 battles , i was only ammo racked once today .Cant say that for the 113 . WZ has less than a sec reload more than 113 but i think the gun handling is better on WZ . Frontal gun depression is way better than 113 . 113 sides -7 front -5 , WZ -7 all around and trust me it makes a difference .
I find the turret bouncier on WZ , hull down you can bounce them all day , Mobility wise they almost have the same Power per ton WZ is 5 tons heavier but has 100 hit points less if i remember right.
All in All not really any big differences to say one is better than the