First, Vander Zee ran the wrong route & Cade probably didn't even know he was there while he was being smothered by two defensive linemen. He woefully underthrew Lachey.
Second, Vander Zee didn't "high point" the ball up and over the defender. He practically reached over the DB and caught it before it hit the defender in the head.
Third, it's a very low percentage throw off his back foot & into traffic. If the ball gets picked off Iowa misses a scoring opportunity.
Lastly, I'd love to see designed plays to get Vander Zee in isolation situations to out jump shorter DB's in the red zone. I can see many corner end zone throws to Reese this year. That play was definitely not an iso.