The whole point of Moneyball was that traditional experts (this includes scouts and coaches in particular) rated players on too many 'intangibles' (form, and yes, 'heart, guts' etc.)--intangibles that formed traditions from which experienced scouts couldn't escape (including tactics like the bunt, various sacrifices, moving the runner over, etc.-- that were demonstrably counterproductive). These traditions are also inarguable--those who believe in the Giants of the Old Days, or that 'heart' and other 'intangibles' are important cannot be disputed, since they do not admit anything as evidence against those beliefs. That's fine, since we're watching sports--and such traditional intangibles are part of our enjoyment (we love the beautiful swing, even if it doesn't result in hits, the sacrifice, the notion of a clutch hitter, hot streaks, the notion that certain mediocre players are 'winners' etc.--even though these things are no more 'real' than a ballet or movie.)