Ao was able to beat strong Hyuga member to get a Byakugan and clan Uchiha regarded him as a genius because he could keep up with Shisui Uchiha in fight. He was hunter ninja so he has extensive knowledge of the human body.
Kakashi has Sharingan, strong lighting techniques and lots of inteligence.
Kakashi has Sharingan, strong lighting techniques and lots of inteligence.