Speed is achieved via optimization, which is achieved via constraints. Javascript is being known for its inefficiency.
Saying JS is just as fast is a hot take and whoever claims that has the burden to proof otherwise.
Sorry, about benchmarks I just quote myself:
> I take these performance benchmarks with a rock of salt. They are mostly hyper-optimzied generics which are as far away from actual production code as it can be. They are written in a way to allocate as little memory as possible and is done by people who know exactly what they are doing.
Funny that you say "not even remotely close" while providing zero evidence yourself, but then ask other people to present their evidence.
https://benchmarksgame-team.pages.debian.net/benchmarksgame/...
There you go. There's the evidence. No goalpost-moving, please.
For evidence that Javascript can be used to build large, production-quality applications, see coldtea's comment: https://news.ycombinator.com/item?id=37568707