Good graplers are thinkers and very much attuned to their bodies. We are thee most uderated MAers out there.
I don't even know how to rate this stuff. I think you have to view it outside of waza. You know what I think of good grapplers as a measure of everything
....so lets not even go there.
From there I think its tough to judge. There are days I get all full of myself and think I'm a 4. Other days I get more real and think I'm a 2. I can't wait to see what ten more years will bring...twenty.
I have no idea what some of these people out there teaching aiki are thinking...wow!