Inconsistent sizing with rotary enabled

So, if you do something like this (blue is Line, black is Fill):
image

You’re saying they come out differently? Only on the rotary, or in regular engraving too?

I’m asking for specifics here because the math for images is quite a bit different than for vectors, but lines and fills are very similar. Fills have a “lines per inch” value, but only images have DPI - I just want to make sure we’re talking about the same thing.