Level 80 combat ratings

WotLK Beta - Combat Ratings at level 80

The author of the widely used Rating Buster (addon that converts combat ratings in your tooltips into percentages), Whitetooth, has been able to derive the level 80 conversion rates and the formula from the client, but keep in mind the following data are only verified correct for the latest beta build (8681), and might change in a future build, so take these numbers with a grain of salt. If you are looking for indepth info on how these numbers were obtained, we suggest you to check out the excellent post of Whitetooth on Elitistjerks.

http://elitistjerks.com/f31/t29453-combat_ratings_level_80_a/