Yes it has been covered before.Sorry if this is a naive quetion and also one answered previously. Round 11 has Pies beating Freo. However, the ladder is reflective of the opposite result by giving the win to Freo.
I am sure there is a statistical squiggle reason' for this but to a novice like myself it is difficult to understand.
The crux is that the ladder is about probables and on predictions it doesn't make anything 100%.
Because Collingwood are 95% probable to beat Brisbane and then 55% probable against Freo it gives 1.5 for the 2 wins and rounds to 4 wins after both results.
Freo are considered only 13% chance against Adelaide and 45% against Collingwood, but this combines to 58% chance of a win from the 2 games combined. This then rounds up to give them the extra win on the ladder.