No brainer. the earth queen had harsher tax and was much more vain, leading her to exploit her people and increase poverty in the lower ring. she forcefully conscripted her citizens because she wanted to and actively sought to make an enemy of the greatest power in the world.
The only person who was probably saddened by her death, was probably Yin, Mako and Bolin’s grandmother. And that was only because she fanatically believes that the Royal Family can do no wrong.
