That's weird! The formula was designed to never go above 100%, even if one player with 100% win ratio vs another with 0% win ratio played on Asia Vs Russia.
You sure you got the formula right, pox?
EDIT: hehe, oops.
F1=(1+DW/((DW^2)^0.5+10E12))/2
F2=(1-DW/((DW^2)^0.5+10E12))/2
Missed a couple minus here, it should be:
F1=(1+DW/((DW^2)^0.5+10E-12))/2
F2=(1-DW/((DW^2)^0.5+10E-12))/2
or:
F1=(1+DW/((DW^2)^0.5+0.000000000001))/2
F2=(1-DW/((DW^2)^0.5+0.000000000001))/2
Those are there only to prevent Div by 0 errors
EDIT2: By the way, is it possible to set that if you don't select the continents (i.e. both players having the same continent) it will just calculate the chances of one player beating the other? (basically, set CWR to 50%)