Hmm. This seems like an odd comparison to me as Coffeescript and ClojureScript really have two different target audiences. Coffeescript seem to be more targeted towards people interested in writing JavaScript application with a more clean syntax whereas it seems ClojureScript's aim is to allow people who want to write Clojure, do so targeting a JavasScript VM rather than a JVM. I'd expect people looking to use either would probably know which one they were looking for from the get-go.

Interesting summary of ClojureScript's current weaknesses though.