This is an interesting comparison because web fonts have the opposite effect of HTTP/2: They introduce a huge delay between clicking a link and being allowed to

This is an interesting comparison because web fonts have the opposite effect of HTTP/2: They introduce a huge delay between clicking a link and being allowed to actually read anything. On 3G or shaky Wi-Fi, I've regularly given up on browser tabs because all I see is an empty page, even after half a minute of loading and when most images have finished downloading. (Maybe other browsers are better than Safari, but I won't switch just to see prettier fonts.)