Zenigata is the most broken character in the franchise. He's a fucking super cop and master detective. Yes, Lupin always gets away, but most of the time it's only because of his superhuman friends helping him out. And even then, he'll figure out Lupin's scheme before they've barely gotten started and throw a huge wrench in the works.
Lupin beats Zenigata by a score of 51 to 50, but Zenigata has a thirty point handicap.
Sometimes Zenigata gets a roadblock. "You're off Lupin! We've got to catch this serial killer!" "You're off Lupin, I'm putting you on the drug beat!"
What does Zenigata do? He bulldozes through these other cases like a beast. Serial killers and drug cartels don't stand a chance against him. Anything that stands between him and Lupin lives to regret that because before they know it, he's slapped his handcuffs on them and they're heading to jail.
If Zenigata was up against Carmen, he'd catch her on the first job, then Lupin and the gang would break her out and explain how she's not quite ready for the big leagues yet, but they're a fan.