Re: Sasuke thinks he is ...
I think Sasuke feels like everyone is possibly out to get him. If people try to stop him, they are detesting his lifestyle in his opinion besides the fact he is a missing nin. If someone is able to defeat him, he will feel he failed and either do two situations.
1) Commit Suicide
2) Go under training of said person
For number one, he would pretty much become a self-pity. He has always been that and feels everything is the center of him because he is an Uchiha.
The second one is the same as when he was under Orochimaru. He swore he would not become a puppet and when he became stronger, he killed Orochimaru off. It is kind of like a baby killing off his/her mother/father once they grew up.
All I know is Sasuke is not a tragical trauma suffering person, but a self-tragic self-pity delusional person. I don't think Tobi did anything, Sasuke let himself become what he is. He will blame the Uchiha's or people for that reason. He doesn't want to face wrong, he doesn't like to be wrong, and that is a real big flaw.
But he is damn lucky! He still has friends that are willing to open arms for his return. He won't acknowledge that ever and people have always been believing he was great. It wasn't enough. The only time he would react if t was an insult to his clan.
That is another point. If you say anything about his clan, you are screwed...and I mean it.