Thanks for the replies.
We all know how people/companies trying to sell products and services will describe their items in the best way possible, but IF what Hughes says is true, I can't imagine using any other rocker arm on my Bill Mitchell Products "new" design RB big bore aluminum block. 4.50 bore X 4.35 stroke for 541 cu in displacement, street/strip use, lots of street and highway miles anticipated. Power goal is the widest, flattest 700 ft lbs of torque possible.