The whole tournament is pretty silly since we know Uno (the wolf) or Makura (the Spider) is going to be the winner.
This is all speculation, but I'll put it in spoilers anyway
The rocket wolves have already proven themselves stronger than all of the angels and they captured Ruu when she first showed up. They've pretty much toyed with everyone they've encountered no problem. So the only question will be who wins the matchup between the wolf and the spider.
Ruu vs Tia in the top half
Uno vs Makura in the bottom half
Ruu probably wins since she's the first wife.
I'm going to guess that Uno beats Makura
Uno wins in the end.
The way I see it we still have probably 3-4 more chapters of this since we still have to slog through Corone vs Makura and Uno vs Bulga which will probably be one chapter. Then we'll have a chapter of Ruu vs Tia and Uno vs Makura then finally a chapter of the winner of Uno/Mak vs the winner of Tia/Ruu. Then a wrap up chapter. So maybe another two months until the "story" as it is continues.