It's because that's the steeziest trick ever thrown down and Brown has absolutely no style when he does triples. Obviously props to him for doing triples because that's crazy but Harlaut added difficulty and so much style to his triple.
You see Kenworthy psyching himself up over and over trying to commit to the triple..
You see Brown calculating the motion in his head hoping to stick the landing right..
Then you see Henrik who is already in first place smiling on his way down the in run with his goggles on backwards and his eyes closed casually throwing a nose butter triple cork 1620 without a worry in the world..