It seems like at least limps would be an opportunity condition. That part is confusing me a bit. What scenario do you want a 0/1 to be added for the note?
As far as the different raise sizes counting, it makes sense you don't want them to count but it's nontrivial to filter them out.
You need a
http://wiki.assaultware.com/Composite-Definitions.ashx composite definition
Two note definitions one where everything is met like the proper raise size and select
Do not take notes for missed opportunities
The other for when the conditions are met to make it a missed opportunity (player limps?).
Then you combine them via the composite as (NC.Success * 100) / (NC.Success + NC.Opportunity) and get a stat just as you are looking for.