Why everyone thinks we compare things in this article? No! It is not a comparisson list. It is a report on new, small and lightweight frameworks that some people may not be aware of.
Sorry, but even if the comparison is not explicit, it's still there. And my whole point is that your title is false: size doesn't really matter for a framework, at least at the size differences you're talking about. This is like comparing cars based on the size of the stereo knobs.
The problem is that the article portrays "lightweight" as "being small in size". Which several others have pointed out here already.