 If chance plays a very large role, then even a team with much higher quality than its opponents will win only a little more often than it loses.If chance plays very little role, then a team with only slightly higher quality than its opponents will win much more often than it loses.The latter is more the case in basketball, for various reasons, including that many more points are scored than in baseball (giving the team with higher quality more opportunities to demonstrate that quality, with correspondingly fewer opportunities for chance or luck to allow the lower-quality team to win.)