Zzulu,
I have no doubt you are not pulling this out of thin air. I know you are smart and as I said before I respect you.
Are you simply saying that the guys who have posted the top 20 by bar weight deadlifts of all time would have bigger than 6 inch wrists? If that is your point, then I missed it, and could not agree with you more.
If you are going just by bar weight, and ignore coefficient, formulas, and the like, then your top lifts are always going to be made by the biggest guys out there. 2 noted exceptions to this rule are Ed Coan, and George Halbert who are top ten all time with 242 and 220 bodyweights.
With those two exceptions the biggest numbers have alsways been put up by guys who weigh from 275 to 400 lbs bodyweight, and bigger people will have big wrists, ankles, knees, hands, feet, everything.
My point is that small boned people can be very very strong. They cannot probably post one of the 10 or 20 highest deadlifts or benches of all time, though, because small boned people are never going to be heavyweights.
B.