culture is endemic and difficult to change. the reason why we signed a Goodrow or drafted an Adam Sykora is because the character to give it your all every shift is a rare and useful trait. stick it on a skilled, smart, or physically gifted player and you've got a stew goin. The best have all 4.
leadership and clutch are different than motor. i think leadership has a lot of facets - the guys who raise a cultural ceiling are different than the guys who raise a floor. Laf is more the former - he's more cherry on top than bedrock.