Also, the increased range is very important for a Paladin to trigger those nasty Crit Smites. Using a falchion solely for that purpose is better but is way too much complicated. I personaly favor the GSwd though b/c my pally is a warforged and its the Fav weapon of the Lord of Blades.
(Btw i Am aware that pallys should always do twf, no need to point that out)