Okay I know some other people are having this problem on all systems. [PC, PS3, XBOX 360]
I for one own an Xbox 360.

To put it simply, something isn't working right with the Ebony armor when you wear it as a whole set.
Not sure if it's the 25% Matched set bonus not being applied or what. [That seems to be the belief]

But to cut to the chase, my Full Orcish armor set [EPIC] has an armor rating of 528, while my Full Ebony armor set [EPIC] has an armor rating of 462.
The Ebony armor SHOULD have a higher armor rating, right? Some bonus about being better if you're wearing all heavy armor or a matching set of heavy armor must not be applied.

I love my Ebony armor but right now, until I can upgrade it again at least, it sits in my house on a manikin while I'm slaughtering millions in my not-as-cool-Orcish armor set.

Please help!

-Rage McKill