On Linux, it renders fonts the same way Chromium or Chrome do. If you're getting "crappy font rendering from Windows", you probably need to change your fonts.conf to change font hinting from full to slight (or none, if you like it more like Macs).

Edit: And also note that, for whatever reason, GNOME does its own thing where you also have to edit the GSettings in addition to the fonts.conf settings depending on what app you're running.