I think the devs are trying to be a bit sneaky here. They’ve been clear that they don’t want us to know exactly how moving through brackets works:
So I suspect maybe something other than the current week’s points affects the movement through brackets. Though it would be nice if they would at least tell us if the brackets are working as intended or if they are, like most other aspects of guild wars, a buggy mess.
I wish I had remembered to take screenshots of our bracket to see how things worked out in it.