This would seem to disagree - is it wrong?
https://www.orientalmotor.com/steppe...er-motors.html
The author seems to make/sell servo's and steppers so I can't see any real reason for bias..
This is the only 'real' data i've seen on accuracy though I have worked out:
hybrid steppers with a 1000 line encoder mean the encoder has a 0.36degree accuracy.
A 2 phase stepper with 16 microsteps is microstepping (target value!) 0.11degrees - so as far as I know the encoder will miss the first 2 or 3 'missed' microsteps though perhaps software can make much better use of the encoder?
Of course if you ran at 256 microstepping (target microstep 0.007deg) the encoder could miss 50 microsteps..