Their methods of predation were different, as well: the succubus corrupts you (and the society around you) by tempting you with lust and making you feel everything is acceptable, so that in the end you're doing unmentionable things to small animals, breeding half-fiends and generally having an Abyssal time.
The erinyes, in contrast, focuses on making you (and the society) repressed, guilt-ridden and ashamed of every sexual thought or action, until nothing is acceptable, and therefore all sins are equal; this leads to exact same things as the Abyssal seduction, except that you're going to maintain a veneer of excessive respectability and enjoy your damnation considerably less.