Half of the NCAAT field goes 0-1 and those teams are below average. The teams that start out 1-0 are above average. Half of the 1-0 teams are in the 50th-75th percentile.
Batting .500 in baseball is well above average. If you didn't understand the sport, you'd have to research it. Or...I guess you could just believe that anything that is .500 is just average.