So on this one encuesta 'who would win a fight to the death' I kind of went on this rant as to why I thought Azula would win. And I thought I'd put it in articulo form.

First and foremost, the obvious; Azula has Blue fuego (supposedly hotter than any other fire) on the show. This is something unique to Azula and Azula alone. Where as Bloodbending is not unique to Katara. And metalbending is not unique to Toph. Others have done it before and (in Toph's case) after. Plus Katara can only do it during the full moon whereas Azula's blue fuego and lighting are present at all times. And she is very skilled...