The word "trance" is misleading.

The wise law of contrary analogies invites us to comprehend that if there are thirteen subjective and negative states during a hypnotic state... likewise, there are another thirteen objective and positive states...

The difference is that hypnosis is a state of passive, sleeping consciousness (thus, the word hypno, from Greek for "sleep."). These states are marked by a lack of control, lack of clarity, lack of self-awareness, etc.

In positive states of consciousness, one is awake, aware, in control of oneself.

To achieve meditation, the consciousness needs to be active, awake, aware, while everything else (thought, emotion, body, etc) must be passive.