Those are obviously the same ships. I like the idea of putting some on fire or so, but then again this scene goes by quickly and the center of attention will always be the charging a-wing.

But back to ESB: I always preferred the shot with the gas refinery. Of course the shot looks dated nowadays, but they are beatifully drawn and by no means take you out of the movie. Updating the clouds to whirl as the ships fly through is a great idea, but I wouldn't go all out creating a new bespin intro. Chances are, we'll be getting those for the Blue Ray release anyways.