Ok, I checked this game too with about the same players but different positions at the end.
https://boardgamearena.com/table?table=174008704
So you were right, it does seem that the multi-player factor is the same for everyone. I'm not sure if it has always been but it seems to be so now.
So basically we have 3 display problems
- Displayed K is not correct
- ELO gain losses displayed for individual match-ups are wrong: they do not take into account the multi-player factor and they take the displayed K factor into account instead of the correct one.
- multi-player factor is not displayed nor explained
Finding where the problem(s) is/are is a bit difficult when only a small amount of the information is displayed
https://boardgamearena.com/table?table=174008704
So you were right, it does seem that the multi-player factor is the same for everyone. I'm not sure if it has always been but it seems to be so now.
So basically we have 3 display problems
- Displayed K is not correct
- ELO gain losses displayed for individual match-ups are wrong: they do not take into account the multi-player factor and they take the displayed K factor into account instead of the correct one.
- multi-player factor is not displayed nor explained
Finding where the problem(s) is/are is a bit difficult when only a small amount of the information is displayed