He is the first Dragonborn... so good luck you random guy you don't stand a chance at all, just accept you're gonna get burned to death by dragonfire now.
Also the exclusivity is weird given the files from the patch were set up for Dragonborn to run on PS3.
I always thought and read (Or at least interpreted ES lore) that Alessia was the first Dragonborn, of the first Cryodiilic Empire. Dragon Speech was an old gift dating well back before even Ysgramor arrived from Atmora (For the first or second time), but the "Dragonborn", was the name given to those blessed by the covenant of Akatosh, that Sealed the gates of Oblivion. Without the aid of their Daedric allies, the Aylieds were relatively easy pickings for the rebelling Humans, lead by Alessia, with special guest appearance by Pelinel Whitestrake.
I hate the main quest because the random dragon attacks kill off my NPCs, I avoid it every game. I've managed over 200 hours on my main without doing it.
Spoiler In Dawnguard when I spoke to the dragon he said he just had an instinct to call me a Dovah, that some day it would become clear to us both. Or something along those lines, I thought it was cool that they took into consideration folks who don't do the main story and I'm hoping this DLC will do the same.
I can respect that. It gets even worse with Legendary and Revered Dragons, though they themselves are extremely fun to fight if you haven't exploited the [censored] off your character. I must have reloaded a dozen times near the cave that eventually leads to the Forgotten Vale, near that Orc camp (Can't remember name), because a Legendary dragon would just annihilate the whole camp in one Strafe.