Age, lack of time, no resting, no practicing, injuries, etc.... Stop the excuses.
Teams older than C's, have played two more games, meaning they have had even less time for rest and practice, and the results speak by themselves.
Boston: 14 - 12, 54%, 7th in EC.
Dallas: 17 - 11, 61%, 4th in WC.
San Antonio: 19 - 9, 68%, 3rd in WC.