Noblesse Oblige.

Sasuke only used his Susano'o to escape Kazekage and Raikage. However, the activation of it caused him to become more heartless and cold than he already was. The destruction of the pillars put his own teammates in danger, yet he only "saved" Karin so that she could lead him to Danzo. Once Sasuke arrives at the meeting, the Land of Iron mediator dude engages him. This gave Danzo the chance to escape. Ao goes after him, and Sasuke tries to as well, but Mizukage blocks him off.

Thoughts:
Sasuke's Susano'o was pretty useless; didn't do harm anyone except his own teammates and the samurai.
His heartlessness greatly contrasted with the first time he used Mangekyo Sharingan against Kirabi. Back then he was touched when his teammates saved him and to repay them he activated Amaterasu. Here, he totally disregards the welfare of his team and his Susano'o even did some friendly fire.
The fact that Ao went after Danzo alone makes me think he'll die; he has been generally annoying to Danzo.
Mizukage's ability that stopped Sasuke was a kekkei genkai, Yoton no Jutsu. It is probably a mix of fire element and earth, as the name implies Lava Release.

In any case, Sasuke is about to face off with Mizukage, and I think we will get to fully see her skills next week.

Things to note:
Sasuke was going to kill all the Kages, yet...
he got trashed by Raikage, but managed to burn off one of his arms in the process (-1); he blocked Gaara's attack, but Gaara blocked his falling pillars (+0); his goal was Danzo, but Danzo got away (-5); Mizukage made this happen (-1); Tsuchikage is just gonna chill and watch the fight (+0).
Basically Sasuke fails to accomplish any of his goals. It think if he focused on one thing, he could have actually achieved something, but he is trying to do too much at the same time, which puts him in the negative.