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 other apart from maybe 490 alpha vs 450 oh and WZ is way cooler looking lol.