There really should be a comparison to something other than java, it doesn't seem fair.
You've done an excellent job of showing Clojure's benefits to a much, much wider audience - programmers not familiar with functional programming. Also it's compelling to hear that you're successfully using Clojure to efficiently "script" larger Java codebases.
Kudos for writing such a hype-less, non-condescending, and educational tutorial for Java/imperative programmers!
* easier to write
* perform just as well
* be concurrency safe
Clojure isn't there yet, but it's well on its way I think.