Trying to understand why my WN8 rating for SU-5 is so low.
Looking at for SU-5 I can see that expected damage is 710.73.
It seems way too high. Even for tr5 spg Su-122a expected damage is just 572.59

Looked at this site (which provides stat for WN8) and expected damage for SU-5 is just 204

Is there an explanation why WN8 expects 710 damage instead of 204? it is a huge difference.