Just fyi, inside of a post processor (the code), you have complete control over what lines get put into the resulting file including stuff that isn’t just the toolpaths you created such as things like start and end code. On top of that, some posts will take advantage of more advance commands (e.g. drilling commands instead of regular z-move commands) and others will not, and it is sometimes something you can turn off and on. So there’s no reason that going from one post to another that the file would be exactly the same number of lines even if you’re processing the exact same tool paths.