He did a fantastic job to actually locate the ball. It was either a bad throw or a wrong route by Marion, I wouldn't call it a drop. If the throw was to the inside it was a TD. If the throw was designed to the outside, then Marion was running the wrong route. Not a drop
Either way the assumption that the throw was supposed to go the outside would make the throw from week 1 where people gave Jake credit for throwing Marion open on the deep ball a complete miss of a throw because it was almost the same play.