As odd as it sounds, as long as you can feed enough filament into the melt zone faster than it can come out the nozzle you can make larger widths and heights than the actual filament width itself. It’s technically just packing it in.
I can only imagine how hard it had to be to tune the retraction though
Like some motors they operate best at a certain duty cycle.
The issue with some really cheap ones is that it’s obvious.
It’s also why, if you’re so inclined at Christmas time, led string lights on trees are hard to photograph since you’ll catch some of them on while others are off at the time of the photo.