In terms of obligation in mitzvos, what is the difference between an Eved Knani and a woman? And if they are the same, why do we have two separate brachos for each in the morning prayers?
(Not completely incidental, as their dispensations have the same source: both the Eved Knani and the Married Woman have another Boss besides for the Torah. He discusses that too.)
He brings – based on Rishonim – that an Eved Knani is either a non-Jew with some Jewish obligations or else "2nd class" Jew with limited obligations.
Either way, an Eved Knani is not a fully fledged Jew - and is therefore on a higher level than a non-Jew but a lower level than a Jewish woman.
As a result, the Bracha for Eved Knani is between the one where we thank for not being non-Jews with no obligations, and the one where we [men] thank for not being women who are fully fledged Jews with certain dispensations.