User blog comment:Death'sapprentice77/Amon vs. Scar/@comment-4555900-20120628022718

Yeah, you should probably mention that those are some pretty big spoilers before they come up.

As it stands, even with the fact that Scar can resist bloodbending with difficulty, Amon has this. Waterbending is literally the best bending form, outside of Airbending, to keep someone at bay. All of Scar's ability is at melee, whereas Amon is a competent hand-to-hand fighter, so may be able to keep Scar from grabbing him long enough to get away, should Scar even get close enough to grab him that is. Amon is also willing to kill Scar if need be.