I'd agree with the conclusion, but I'd also agree with nudded - the article is nearly free of useful content. Listing popular libraries of each language does not a comparison make.

It's a fair (and quite reasonable) conclusion but the article in no way supports it.

In fact, Python and Ruby both are very high level, multiparadigm (oop, procedural, functional, ...) dynamic languages and the difference between them is pretty small. One is a bit more perlish, and one is focussing on a clear, deterministic syntax. Thus, I think the conclusion easily generalizes.

As one wise man once said: Wether you prefer Python or Ruby depends mostly on which one you met first.