How can overall total ranking and overall ranking for live games be different (in this case)?

[shinuito]

@GreenAsJade

so it’s effect on your overall rating is in fact expected to be different to their specific game rating effect on yours, even for that one game.

But why?

@anoek

@flovo came up with the great idea of using your opponents overall rating when updating a sub-rating,

Let’s say Overall, Live Overall, 9x9 Overall and Live 9x9 on a new account all start on 1500±350.

All four of these after a live 9x9 game get updated only using the opponents overall rating. (Unless this isn’t the case?)

They all start the same, they get given the same numbers, opponents overall rating and deviation and volatility, when being updated, and I assume they all use the same rating update function, so the output should be the same?

As long as you don’t play a different time setting or board size, all the games are 9x9 live for example, then at each step the numbers come out the same and so should stay the same.

In practice the numbers almost come out the same except as I mentioned the overall seems to deviate by approximately one point - which over time seems to accumulate to 3, 4 or more points.