Not really comparable no, at least not any more than any intoxicating drug is comparable to another intoxicating drug purely by virtue of altering brain chemistry.
IMO dissociative states induced by cannabis that precipitate an actual psychiatric disorder and diagnosis are not comparable to purely drug induced states of dissociation either. The former is a manifestation of an innate cognitive dysfunction, perhaps triggerred by some downstream effect of a different drug of course, while the latter are targeted and temporary changes in an otherwise fairly coherent mind.
"Dissociation" could be said to be a fairly broad term and apply to a lot of different modes of consciousness - in that sense almost all drugs could be said to have dissociative elements, except perhaps racetams and other NMDA agonists, positive allosteric modulators, "associatives", colloquially, but even then one could be said to be "dissociating by association", in a way, where the previous association was unaltered baselines consciousness.
So yeah, to be blunt, IMO, no, this is a tenuous enough link to be meaningless.