delericho
Legend
Longswords and Greatswords, however, are radically different in the way they're wielded. A large part of a Greatsword's blade has a dull edge, and is supposed to be gripped in combat. Also, Greatswords have much longer hilts, even relatively speaking. If you ever look into a medieval fencing instructions book to see how Greatswords were actually employed in combat, you'll see that they work very, very differently from Longswords.
Bear in mind that the greatsword includes not just your "medieval fencing" version, but also the Japanese no-dachi, the Scottish claymore, and basically any other sword too long to be a bastard sword. What you've said above in not universally applicable to all of these.