Does it really serve anyone to have another ridiculous language war every time someone posts a microbenchmark that shows their favourite language winning?
I think it's a shame that the client side of the web is basically limited to JS, because seriously, that's the only reason so many people started coding in it in the first place. I believe that if we could, many devs would prefer other languages.
The same thing happened when (non-GC) HLLs started to overtake assembly language. And the discussions will continue to be equally context-free. And I'm sure that just like the last time around, the most vociferous participants in the debate will be people who don't have to work with terribly high performance demands anyway. On account of the people who do usually being way too overexposed to the mountains of nuance (and aware that the only reliable way to find the best option in any particular case is to do some measuring for that particular case) to feel comfortable making the kinds of categorical statements that make for good blogging.