I believe I did say "and the bad parts". I agree - there are lots of bad parts to JS - I often wish it could be remade without the bad parts. However, a lot of these bad parts can be mitigated with sane conventions - that's what Crockford's "Good Parts" is all about. If you haven't read it, I highly suggest it.

I can't speak for Ruby, but in many ways JS is more powerful than Python, especially on the functional side of the house.