Skip to 1:53 (to avoid one of the most awkward endorsements ever). This "attacking block" works precisely because the two weapons he's using are the same length. If one were shorter, the opponent could well be able to recover his guard before enough ground was covered to deploy the second, shorter weapon. [ame="http://www.youtube.com/watch?v=EFPO1zdZb08"]http://www.youtube.com/watch?v=EFPO1zdZb08[/ame] EDIT: I don't think one is necessarily superior over the other. As with most things, it comes down to how you use what you have at hand. Besides, most of the FMA players I know (not including myself curiously) probably also have the shorter weapon hidden somewhere on their person in the event that range does come into play.