I was looking at it, there may be a reason he won against you(the only one I was able to find)... Maybe you cant simply add the defensive bonuses... I'll use your example
your defensive bonus could be 0,88x0,88x0,9x0,9x0,9x0,9=0,51 more or less(0,88=1 - 12%; 0,9=1 - 10%)
The offensive bonus of...