It was a pretty terrible game, but he also made some good throws. It's his first game in a new offense, and his skill players are all young and very inexperienced. Yes, that's making excuses, as he made some truly terrible decisions. However, I think he'll be fine in the long run.
As for who "won" the trade, let's see how Denver's picks turn out. Chicago ended up with an above-average starting QB, regardless of a bad game. There's no guarantee that any of the guys drafted by Denver ever contribute meaningfully over the course of a season.