Grand Arena byes lose out of multiple rewards, 100's of currency, & 1000's of championship pts

So, using your initial choices of phrase. If a bye makes you miss 1 round, so 3 battles, then you get the max points for that apparently. But that means you have to subtract that many points from your score before you divide it by 5, because otherwise you are saying you fought for the points you got in the bye as well. So try that perhaps? or divide it by 8 immediately, then compare it to the max people are saying you should get, you should see it works either way.