People seriously need to stop harping on how people dies in this series.
Tokyo Ghoul is a realistic-based series, which means, that people can and will die like rats when it happens. When someone die, they just die and that's it. Nobody is "destined" to die at the hands of a specific person, everyone can be killed by anyone and everyone can kill anyone if the chance appears.
Nobody is special or born with special priviliges, everybody is fair game, God makes no difference between anyone, that's how much and how little worth everyone living in the world have.
Tokyo Ghoul is ruthless like that.
Just because one have power, it is not the same as standing above others with it. Without knowledge, that power means shite (Just look at Rize and those who recieved her kakuhou after her...for example).
Urie grasped power and at least, learned how to use it after many, many failures (the Auction = He went nuts. Donato = He went nuts...Amon = He went nuts.) He finally learned how to master it so it didn't came out of nowhere.
And remember, the ratings are made by CCG...they mean shite since they are NOT ACCURATE measurements of a ghoul's power. They are mere guesswork. And those can be wrong, big time.
So these complaints just have to stop