Unfortunately, Node.js and V8 seem to be about 2.5X slower than JavaScriptCore for bootstrapped ClojureScript. I haven't found a way around it.
I also don't mean to trick anyone and this is explained in the post.
The time you are reporting is also not that 'fast'. Other tools start in a fraction of that time.
Edit: original comment mentioned sbcl and included sbcl repl start-up time.
'less slowest starting Clojure REPL of three'
Mentioning 'fastest' at a time of 3GHZ multicore machines with SSD and a duration of 0.1 seconds is just absurd. That's >100 million instructions just to start a language prompt and evaluating a symbol to itself. The Java version is even more absurd with around 1 billion instructions just to get a REPL...
A shell on a 1 MIPS DEC VAX 11/780 started faster, while the machine had a hundred users.