It should actually work fine.
Either the calibration didn't work, or you have some slightly different ESCs.
Now that it is configured, do the motors start at the same time and same RPM when you arm and give smallest throttle possible?
I bet you can't tell the difference when it is flying.
If you used the wiki procedure, you know that the ESCs all had the same pulse length to calibrate on. If you do one at a time or by hand, you can get a little more variation depending on how hard you push the stick against the stop (for instance).