This came as the result of comparing Dumbledore to Allanon, a druid from the "Shannara" series. NOTE: I'm think that Allanon is stronger than Dumbledore, but I defended Dumbledore for the sake of debate.

Me: Well Dumbledore WAS pretty much the only one to fight Voldemort evenly.
Brother: Yeah, but Allanon was able to kill a dragon single-handedly. Dumbledore fought Voldemort, but he couldn't get the job done.
Me: A lot of heroes kill dragons, though. You just have to find the weak spot. Every dragon has a weak spot.
Brother: Yes, and this dragon's weak spot just happened to be mountains, so Allanon dropped one on him.
Me: Ok yeah, Dumbledore's got nothing on that.

Yes, Allanon actually used his magic to drop a mountain on a dragon. Step off and bow down, Dumbledore. STEP OFF AND BOW DOWN!