It isn't fair to critique a philosopher (or anybody) without reading them, but ... I just can't take Ayn Rand seriously. Like, at all. And to compare her to Aristotle seems laughable.
How do you know that comparing her to Aristotle is laughable if you don't actually know what she said?
I recommend "Introduction to Objectivist Epistemology" if you'd like to compare her epistemology with Aristotle's.
Edit: again, why the downvote? Yes, I know some people don't like Ayn Rand (and others adore her). But there's nothing in this message that warrants a downvote.