Complex sentence: It is incorrect to assume that a mechanical hackamore is milder than a bitted bridle, it is not, the device has potential for abuse at the hands of a rough rider, similar to that of a curb bit.
Split into simpler sentences: It is incorrect to assume that a mechanical hackamore is milder than a bitted bridle, it is not. The device has potential for abuse at the hands of a rough rider, similar to that of a curb bit.