are the SVG files on PC or MAC the same?
Or is there something different?
SVG is the same in all the systems , it is a standard for vector graphics, the only difference that you can find is some kind of metadata that the diferentes software for edition (like inkscape) will write in the file, but this metadata is ignored when is loaded in a different editor, if you want delete that metadata from inkscape select “optimised SVG” in the save options
There should be no cross platform differences in the SVG parser (nanosvg), SVG draw routine, and renderer (nanovg). However, it’s a lot of ground to cover, so there may be accidental differences or rendering bugs on certain platforms.