Obi was the same in episode 4. He feels like a failure. His one job was to be the mentor to Anakin and he failed and that failure has made him question everything.
It was great seeing Vader back but without his music it doesn’t feel the same. Their fight seemed slow. The acting is very muted across the board.
Some fans redid their battle in episode 4 it was amazing. It's not perfect, but a great effort - they changed it from it's super slow pace.
