the highest rating for the arena is the top 1% of the onyx division. that means you are he best of the best.
Halo: Reach has a PEGI rating of 16.
When you play lots of arena type games you get one .I should know i have one.
The highest rank in Halo: Reach is Inheritor.
Halo: Reach is rated M (Mature) for blood and violence.
Higher is better. 1000 is complete average Above 1000 is above average Below 1000 is below average
18
Inheritor.
In halo 3 multiplayer you have a skill rating next to your gamer tag. 50 is the highest possible skill rating.
Inheritor is the maximum rank so far in halo reach
The highest possible rank in Halo: Reach is Inheritor (20,000,000 cR) but the highest rank with Grades is General which has FOUR grades (grades are credit milestones which are included with all ranks up to General).
I am pretty sure it is a inheritor.
Buy better interwebz plox.