Every sign points to there being a HUGE gear reset for Cata. Check this combat rating table out: (gathered by Whitetooth, author of the Ratingbuster addon, so pretty credible)
60 70 80 81 82 83 84 85
melee hit 10 15.769 32.79 46.696 66.499 94.701 134.862 192.056
spell hit 8 12.615 26.232 37.357 53.199 75.76 107.89 153.645
crit 14 22.077 45.906 65.374 93.099 132.581 188.807 268.878
haste 10 15.769 32.79 46.696 66.499 94.701 134.862 192.056
Sourcehttp://elitistjerks.com/f15/t29453-combat_ratings_level_80_a/p22/#post1639830
Not only show this the drastic chances to the ratings systems and your gear after the patch. Your high end heroic icc gear is proberbly only usable for 1/2 levels. Ow and try to cap that 1500+ hitcap
60 70 80 81 82 83 84 85
melee hit 10 15.769 32.79 46.696 66.499 94.701 134.862 192.056
spell hit 8 12.615 26.232 37.357 53.199 75.76 107.89 153.645
crit 14 22.077 45.906 65.374 93.099 132.581 188.807 268.878
haste 10 15.769 32.79 46.696 66.499 94.701 134.862 192.056
Sourcehttp://elitistjerks.com/f15/t29453-combat_ratings_level_80_a/p22/#post1639830
Not only show this the drastic chances to the ratings systems and your gear after the patch. Your high end heroic icc gear is proberbly only usable for 1/2 levels. Ow and try to cap that 1500+ hitcap