Next to accuracy, ball placement is the most important thing to me. It's not easy to tell if a guy has it or not, a lot of things to try to figure out what might have affected the throw, what the QB was thinking, what was the receiver supposed to do, where was the defense when the ball left his hand.... just a whole lot of stuff to take into consideration.
But it's easy to tell when the guy hasn't got a clue, or it's not a consideration when he throws the ball. I think Zach is closer to one of these guys. He was once one of my original six, but after watching more & more games I kept asking myself, "what the heck was he thinking"
I could be wrong, I could be way wrong, but it's very possible that he knows his receivers so well, that he was throwing balls that otherwise wouldn't make sense. His receivers were that good, that he could very well have been thinking that. But I'm going to err on the side of caution.