I'll do it.
Based on this picture, there are several assumptions we can make.
The Master Sword is the supreme magical blade in all of Hyrule and any other land Link chooses to roam ( as he has proved in several games ).
Any quest for such a blade has always been difficult and full of trials. Such a quest proves that said blade is the most supreme, and its hero is the best.
Zelda does not die in any game. And she even kicks some nice monk ass in Ocarina of Time as the almost as heroic figure: Sheik. Aeris died.
This is the only sword that is evil's bane, all evil.
Link is one of the only heroic figures ( besides Batman, and we are not including him ) who uses more than one main weapon. Must I list them all?
And finally, not only are the hero and villan linked spiritually, but the princess as well!
Zelda is truly, the best.
...a Wandering Star for whom the black darkness has been reserved forever...