That's not an objective comparison, since Javascript has been optimized to deal with arrays and numbers, as that's one main use-case that people have in the browser. Take a look at the source code and tell me if that's the kind of code that you write.
No, it's not an objective comparison because that's not the kind of code that we deal with in 90% of the cases, except when doing games, but then again plain Javascript is shitty for doing games, unless you develop in a strict subset that isn't meant for humans.