Does anyone else agree that Mangekyu sharingan is ridiculously overpowered? Not only has Itachi's use of it has proven deadly but Kakashi's as well for ripping off Deidera's arm. The user only has to make eye contact with the opponent to blow him up or put him in a hypnotical unbreakable painful genjutsu...
So whats the use of having the most chakra and super powerful version of Wind Rasengan if the Sharingan user just uses Mangekyu on the person?