In fairness, Booth, Kellogg and Ross released their R2 decisions and there has been a burst of posts as a result of admits or dings. But even prior to release, there were more posts on these threads, just an observation. I think K interviews more applicants from its pool.
I expect more activities at the W thread once R2 decisions are released. But then admitted folks tend to migrate to FB or W S2S threads. the W behavioural questions don't really invite to interview summary and feedback.
Agree that the CBS application cycle (ED, Jan) is a different story, didn't apply to CBS, so no expert here.