Was that in response to his exhortation to learn different languages, or do you actually believe that Perl and its self-proclaimed successors have any profound differences?

I think the point is that while the article link is to the scripting category, the site does in fact cover a lot more languages.

Yeah, that was the first point. You can see a lot more variety of comparisons in the main page. The categories are a bit odd at times, but it's a good stab at being representative.