WebKit also isn’t trying to push a proprietary OS-locked runtime for interactivity, doesn’t wildly diverge in most rendering behavior, and handles most basics correctly.

As much as IE6 was a menace for not keeping up with standards, what made it really bad was crap like ActiveX, radially different layout/rendering behaviors, and shortcomings like inability to render transparency in PNGs and some of the most illegible italic text rendering I’ve ever seen.