If your sword reaches 2cm further but your chest also reaches out 2cm further there might be no effect.
But even if there are differences, it's just a decision you have to make as a Player. It's like deciding which sword to use in Singleplayer. Damage, Length, Speed... in some situation it will be good, in others bad.
Don't get us wrong - it's not a big deal. Like if TW turned round and said "sorry we don't want to change it"; then I wouldn't care. But because it is not easily changed and can't be changed midgame I don't personally feel it should be included in a game that wants itself to be taken seriously as a competitive multiplayer platform.