'WAR is context neutral, so it doesn’t account for any kinds of sequencing, which can have a big impact on W-L record; just ask the A’s about that. It’s also a linear model, where team run scoring is not linear, so at the team level, it’s better to use something like BaseRuns.' 'WAR isn’t “inaccurate” because it doesn’t align with team win-loss records perfectly. It isn’t designed to, because team W-L records include a lot of things that aren’t player-skills.'