There would probably be slight differences due to the keeping track of the current game tick, and different initial random number generator state. But, that would probably give you enough info to reasonably guess. A hex editor like HxD should allow someone to insert the correct number of 0 bytes in the right place.
I suppose you can use the DOS File Compare utility in binary mode to find where things are suddenly frequently off, and use that approximate place as a starting point. You could compare the file sizes to guess how many 0 bytes to write. To compare the file contents for the difference point use:
FC /b fileName1 fileName2
Or better yet, since that produces a lot of output, redirect it to the text file, so you can open the file and examine the output more closely.
FC /b fileName1 fileName2 > diff.txt