You said it, UB. GFII is, if anything, even greater than GF. The many turns and complexities of the plot are unmatched in movie history. Complicated? Yes! Absorbing? Even more so! The Cuba sequence is so brilliant, so authentic, that serious scholars of Cuba tell their students to watch GFII to get a real feeling for what Havana was like on the eve of Castro's takeover. Possibly the greates film ever made.
Another thing: he says nothing about Michae V. Gazzo, whose character and performance made the movie.