That was just a joke lol. Reza really puts his best effort while teaching, which is why he expects similar results in return.
I would say he’s the second best dsa prof after Cathy (as far as I know).
You’re right about partial marks, and he even holds test discussion sessions where you can debate and get more marks if you prove your point.
He’ll constantly joke about failing 1 out of 4 people, but it’s just to motivate students to work hard, and to make sure the students are engaged.
I had a good experience with him, and somehow got an A. The midterm took most of my marks