I think what we have with Karate Bullfighter is an Ip Man situation: taking the life of a renowned martial artist and making it more cinematic and action-packed. I'd stand corrected if they were fairly faithful looks at the lives of these figures, but I'd guess they're not; there's just a little too much killing and over-the-top violence for them to feel real (but strange things can and do happen).
I think this film is also known as Champion of Death sometimes, but Karate Bullfighter sounds better to me, and there is a scene where the film does indeed live up to that crazy title. It's one of the more impressive scenes technically, but it also could've been one where a real animal was getting hurt; it's a bit hard to tell. You can compliment it for feeling authentic, but at the same time, the authenticity is quite grisly and potentially upsetting for some.
Besides that, it's fairly standard stuff. Sonny Chiba is good, there's some energetic camerawork, but it also feels a little dull in places, even though the runtime is less than 90 minutes. It's good enough for those who really like down-and-dirty martial arts movies, but I don't think it's for everyone by any means, and isn't quite a highlight for Chiba (even though he is quite good here, considering what he's given).
