Miami's offense last year ran a ton of isolation plays. An example would be those 3x1 formations where the QB would just throw it up to where he expects the single WR/TE to be if he likes the match-up. These throws are generally made well before the target is open and with targets that don't tend to get much separation (Miami often used Parker, Williams, Hollins and Gesicki in that spot). The QB is not going through progressions. He's basically throwing it up to a spot where he hopes his target will have the advantage. I don't agree that it's a 90/10 thing, I'd say probably more like 70/30.