This video clearly explains why someone has earned more and someone has earned less.

First of all, it is important to realise that we are still only talking about profits, whether they are small or large. We are each unique individuals and that carries over into the details of the actual execution of each and every deal. That’s why differences arise, and it’s not about comparing ourselves to each other, it’s about everyone being happy with themselves.
So that you can enjoy trading, execute trades without stress, and sleep soundly even when you have open positions.

Everyone has to adjust and fine-tune the details on their own, and that’s how you actually create your own holy grail.
HGM – holy grail method.