While few files are duplicates of the original files that isn't true for most of them. The so called patch bug fix listed on the front of this forum is more accurately a full on mod. Most were simple issues like added or missing variable or using an S on the end of variable name that didn't have it. In fact the bugs I found were submitted in so he could fix them directly. If we look at the patch / bug fix I posted on LR2's forum it does just that it simply updates the files that are different from 39.1 and 39.3 and corrects a few bugs that are in the code.
Holy fuck no wonder this mod has so many bugs and install issues.