(Edited repost as first one had wrong words in them, also a few more intros dialogue added.)
Negan: You kill for peace? That’s adorable.
Peacemaker: And you kill for what—barbecue sauce and leather jackets?
(Clash!)
Negan: Lucille’s thirsty. You volunteering?
Peacemaker: Only if she’s bulletproof and emotionally available.
(Clash!)
Negan: You wear a toilet seat on your head. That’s commitment.
Peacemaker: Better than carrying around a vampire bat named after your ex.
(Clash!)
Negan: You got daddy issues or just bad taste in helmets?
Peacemaker: Says the guy who treats a bat like a girlfriend.
(Clash!)
Negan: You dance, you sing, you kill. You a boy band or a breakdown?
Peacemaker: I’m the encore. You’re the warm-up act that gets booed.
(Clash!)
Negan: You got a bird sidekick. I got Lucille. Wanna compare body counts?
Peacemaker: Only if we count emotional damage.
(Clash!)
Negan: You kill for peace. That’s not noble—it’s pathetic.
Peacemaker: Says the guy who cried over a bat and begged Rick to spare him.
(Clash!)
Negan: You ever win a fight without crying first?
Peacemaker: You ever win one without hiding behind your dead wife’s name?
(Clash!)
Negan: You’re a joke. And not even the funny kind.
Peacemaker: Better a joke than a washed-up psycho clinging to a baseball bat.
(Clash!)
Negan: You’re a joke. And not even the funny kind.
Peacemaker: Just try me, motherfucker!
(Clash!)
Negan: Now, about Harcourt? She is a real hottie …
Peacemaker: Stay the fuck away from her!
(Clash!)
Negan: Harcourt, a real woman. I can see her become one of my many wives.
Peacemaker: Hell will freeze over first before I let that fucking happen!
(Clash!)
Negan: My dude! Take that stupid, fucking helmet off your head. You look like a fuckin- -
Peacemaker: 1. This helmet rocks! And 2. FUCK YOU!!
(Clash!)
Negan: (laughing) You can’t see me… (Does John Cena’s famous “U Can’t See Me!” hand gesture).
Peacemaker: (rolls eyes) Wow! Like I’ve never heard that before.
(Clash!)
Negan: Vigilante is a moron, and so are you!
Peacemaker: What the fuck did you just say about me and my BFF?!/Say that again. I fucking dare you!
(Clash!)
Negan: Eagly sends his regards.
Peacemaker: You ate him, didn’t you!/What the fuck happened to him?
(Clash!)
Swapped intros
Peacemaker: You swing a bat. I shoot people. Guess who wins?
Negan: You talk like a bad action figure. I break bad action figures.
(Clash!)
Peacemaker: You ever try being the good guy?
Negan: Tried it. Got bored. Went back to smashing skulls.
(Clash!)
Peacemaker: You’re not even the worst guy I’ve fought. Just the smelliest.
Negan: Keep talking, Cena-lite. I’ll make you a headline.
(Clash!)
Peacemaker: You ever heard of restraint?
Negan: Only when I’m tying someone to a chair.
(Clash!)
Peacemaker: You’re not scary. You’re just loud.
Negan: Loud gets results. Quiet gets buried.
(Clash!)
Peacemaker: You ever fight someone who doesn’t flinch?
Negan: I make people flinch. Then I make 'em regret it.
(Clash!)
Peacemaker: You led sheep. I lead warriors. Big difference.
Negan: You lead corpses. And daddy still wouldn’t be proud.
Peacemaker: You led sheep. I lead warriors. Big difference.
Negan: Buddy, I was the leader of a group called The Saviours.
Peacemaker: You’re not scary. You’re just a failed cult leader with a leather fetish.
Negan: And you’re a walking trauma dump in spandex.
(Clash!)
Peacemaker: You broke the world. I’m trying to fix it.
Negan: You fix it with bullets and daddy issues. Real hero stuff.
(Clash!)
Peacemaker: You broke the world. I’m trying to fix it.
Negan: This world is beyond your help./You made it a whole lot fucking worse, Helmet!
(Clash!)