Mithreander, it means when judging a match, there are certain things that will give some extra weight to one move over another. For example, in a fight between the following two moves...
1. The snake decimates the wastelands; negates the cut of the flower!
2. The lotus blossom leaps close to the temple; wards off the strike of the reptile!
Thr first move attacks with snake style (first on the list back in the original post in this thread), while the second move is defending against reptiles which includes both snake and lizard styles as seen in the first entry in the original post. So a judge could give some extra weight to the second move since it defended perfectly against the attack, even though the first attack is much more aggressive and powerful sounding. It's pretty rare to even get a match up like that, so some judges give it lots of weight due to it's rarity of happening.