Had that happen with my being the beneficiary, and that's how it works.
I had the high score of 229 and was the only player from my CC. The other club had a score of 327 with 5 people playing, but their high scorer was only in the 170's.
We got the 100 points for having the high scorer and ended up winning the match 329 to 327, and then got the extra 500 points for winning the match.
I hadn't know the process either until this last clash, as prior ones were usually never close.