Rock Creek in Deer Lodge, Mont., is one where I scratch my head and think raters don't know anything. It's a beautiful setting in the mountains.
I'm having a hard time connecting the second sentence with the first one.
I'm not sure they're meant to be connected in the way you're thinking. I read it as an oral response, and as such, probably not crafted the way it would have been if it were written (I assumed this was a phone interview or a sit down or something). If you read it to say something like "Rock Creek in Deer Lodge, MT, which is in a beautiful setting in the mountains, is one where I scratch my head and think raters don't know anything". TD's saying it's underrated, but also providing some context as to the setting for people who are unfamiliar with the course. I didn't read it as TD saying it should be rated higher strictly because of the setting.
Of course, he can let me know if that's wrong.