With coconutBattery Online you can now compare your battery capacity with others.
The graph below shows you your battery health (dark green line), the average battery health for your MacBook model (light green line) and the range of all battery health data for your Mac model (green cloud).
The 2nd graph shows you your battery health based on the loadcycle count (dark green line) and the average battery health based on the loadcycle count for your MacBook model (light green line).