Historically, "honor" isn't what has won fights. Being as brutally dishonorable and malicious as possible has done that. This is a tactic that works for any fight. Honor doesn't matter when you're the loser.
Went to see Jujutsu Kaisen 0 yesterday, it was cool. The movie wasnt really a masterpiece, it had some pacing and characterization problems, but overall I enjoyed it, maybe because it was the first anime film I have ever been to in the cinema lol. The battle animation & music were top-notch. I havent seen much of the anime so people who watched the entire season would probably like it more.