Hm, I see what you're saying but I kind of disagree. To me, a fluke implies that it wasn't really your fault; you did everything pretty much right, but bad luck results in a negative outcome. Like in your scenario, "The defender had good coverage, he got a hand on the ball, but unfortunately another receiver was in the right place at the right time and caught it. Chalk it up to bad luck; there's not really anything to fix."
It's not like we would say on these plays, "We didn't block the pass rusher, we didn't communicate that he was free to the QB, but unfortunately there was a defender there to grab the loose ball and score. Chalk it up to bad luck; there's not really anything to fix." On both of those plays, we played very poorly, so to disregard them as flukes so that we can say we played Miami evenly seems off to me.