If I had to ballpark, I’d say they’re probably in the same order of magnitude. The more general answer is that I don’t think LoC really means all that much. Some languages frankly have wider lines than others. The standard Elm formatter produces code so narrow that it looks like it’s supposed to be read on a phone. I don’t particularly love extra keystrokes, so in a vacuum I’ll take a terser language over a more verbose one, but there’s all the usual nuance underlying that preference: is it so crammed as to be unreadable, is it very difficult to write, etc etc etc.
When I compare JS and CLJS I focus less on character count than on whether one or the other has more default assumptions that I find comfortable and useful. CLJS has more of them, taking care of more things by default (if/case/cond-expressions, recursion, immutability, atoms, etc etc etc) than JS, which to varying degrees I need to wire up to do these things.
Sorry to be evasive