I would have appreciated it, if the article tells me _which_ difference I am supposed to see. I know, the fonts look different, but why is one deemed 'superior

I would have appreciated it, if the article tells me _which_ difference I am supposed to see. I know, the fonts look different, but why is one deemed 'superior' to the other? In the section 'Alternatives', it proposes Verdana, but in the comparison, Arial looks sharper than Verdana, even if you open the image. Further, Arial can put "more" letters into one line. Maybe it is a coincidence, but I'd like to have seen number 15 of the Hacker News list shown in the Verdana font. I'm not impressed yet.