according to Equiano, how significant are the differences between African and European forms of slavery?

From the text:

Those prisoners which were not sold or redeemed we kept as slaves: but how different was their condition from that of the slaves in the West Indies! With us they do no more work than other members of the community, even their masters; their food, clothing and lodging were nearly the same as theirs, (except that they were not permitted [Page 27] to eat with those who were free-born); and there was scarce any other difference between them, than a superior degree of importance which the head of a family possesses in our state, and that authority which, as such, he exercises over every part of his household. Some of these slaves have even slaves under them as their own property and for their own use.