I am totally confused now. The Realm arena shows the following ranks (tried to upload the screen images but upload is not working)

1-Abraham100
2-Ovarian
3-OldWolf
4-JArdis
5-StarCutter
6-Sif
7-Vampirella

The RA Ranks show
1-Abraham100
13-OldWolf
17-JArdis
18-Vampirella
20-Ovarian

When I click on the names in the UA the players stats window show the ranks that are listed in the RA. I was under the impression that the ranks for the top 10 in the RA were based on the rank in the UA, but apparently that is not the way it works. Does anyone know how it works?