Not possible to tell what the differences really mean. I wouldn't waste much time dwelling on that item.
A second one is definitely important. If you review the archives in this forum you will see that many people have done 20+ and still get some stones. Andreas Moritz ' wife got a mammoth stone on her 9th or 10th flush.
Nobody can predict how many stones will be released in a given flush. It's too complicated to know such a thing in advance. Everything from your diet to your previous condition to the protocol you're using to the preparations you take impact that. So who knows?
Read, read, read ....... read the archives here. Read Andreas Moritz ' book The Amazing Gall Bladder Flush if you want to really understand what you are attempting to fiddle with. It's a large story and you don't want to go into it blindly, hoping for hope, when you can get educated and direct your own healing from a power position of knowledge.