It is the same thing for counting anything on the cards. Everywhere you see XBH on the card you multiply it by 6 if it is on a roll of 7, 5 on a roll of 6 or 8, 4 on a roll of 5 or 9, etc.
If it is TR 1-4, SI* 5-20 (partial XBH for example) on a roll of 6 then I would calculate it as 4/20 x 5 = 1. That is 4 chances out of 20 for an XBH times 5 because the result was on a roll of 6.
If you count them all up this way you can compare one card vs another.