So, part of that sounds stupid out loud, and Jack quickly reaches into his mind to come up with a way to rephrase his grievances. He of course, also doesn't back down.

"I'm mad at you because I have a memory of getting my ass kicked, and an equally clear memory of a cougar shredding itself to pieces before getting my ass kicked anyway, and I'm aware of how good you are at killing splicers."

Which is closer to the heart of the issue, and maybe Jack will figure out what that issue is before Siffleur perfectly counters him again.