I usually play parlay on most of my predictions and fighting cannot be predicted exactly precise, it all depends upon how they perform on that particular day, doing MMA math is not possible and with Poirier and Gaethje you cannot conclusively say one is going to win before the fight rather than speculating and choose a side, as bbc.reporter noted, one is a technical striker while the other a brawler and Gaethje had a good chin before coming to UFC, but the caliber of fighters is different here and you cannot take punishment all the time, what i am trying to say is, styles makes fights and some fights we know what the result would be and those are the ones i usually pick rather than going for difficult ones.