Yes, it most definitely should!

Because a group of people all had this exact same solution and they probably upvoted it themselves.

Added.

And no, you're right to not assume it, because the default .sort method modify the original array.

Performance on a simple calc like this honestly wouldn't make any difference

me too

Ranks can't be changed

Consider it a feature of Codewars: Offer what you can to improve what it already here; for what is already here offers so much to us already because of what others have already offered to us.

You can suggest a new one.

Write a function which will return value for which strict comparison will give false!

You were returning a boolean instead. Not a kata issue.

do grammar corrections

Could you pinpoint what should be corrected? Already changed give for given

Seems reasonable. It's reusable, and well named.