I don't think that is true. The distribution of player talent in any sport is something like a bell curve, with the distribution of talent in MLB on the extreme end of one tail. You end up with a kind of pyramid shaped distribution. If what you are suggesting is true, there would be a glut of above average (but not elite) MLB players being consistently underpaid and/or overpaid. That would represent a major market inefficiency that could be exploited by other clubs. The amazing thing about baseball is despite the players being the top of tier of the profession, the top 1/10 of 1 percent, there is still such huge variation in ability.