A scale of judging the looks, smartness & suavity of a guy ranging from 0 to 10, with 10 being the ultimate stage of perfection. Girls are enamored by guys with high stud-factors.
Different individuals or organizations can create different computation methods to calculate stud-factor. If an organization, say XYZ Corporation, computes stud factor, it'd be termed as the 'XYZ stud factor'.
Jane : John Doe is a very handsome intellectual & has a great demeanor. I'd give him a stud-factor of 9