John, I believe Chambers plays wider, has better angles to play and greens are more interesting. Not to mention it is much inducive to bump & roll play. With the bent grass greens, Sagebrush has much more difference in speed between the green and the fairway which make B&R more difficult.
I think there are a lot more strategy in play at Chambers.
I've only played each course once, but I prefer Sagebrush.
In fairness, I played CB in the spring (still pretty firm), and I was sick and running on 3 hours sleep, watching Rich Choi fly it past me. I played Sagebrush on a perfect day last summer.
I thought Sagebrush was very receptive to the ground game. I liked the greens better, and just preferred the mix of holes. Chambers is a good course and a great test. I'd say Sagebrush is a great course and great fun. I don't recall a real difference in width on the two courses, but who can say off one play. Two more rounds on each course would round out my perspective. Chambers was kind of a grind, it may have just been a bad day for me.
If I wasn't marooned on an island and dependent on ferries, Sagebrush would be on my radar.