Whichever one is the better trained and more experienced fighter...
As an INFP who is into martial arts, who has quite a few INTP friends, this is as accurate an answer as I can give. I would beat any of them at rapier or longsword (I'm into HEMA, so sue me), but one of them would beat me at MMA, and another one would beat me in archery, kendo, or wrestling. If your question is actually about arguments, no one is likely to win any argument that we get into. If an INFP and an INTP get in an argument, chances are, both walk away (or get pulled away by friends) frustrated and angry.