The playcalling is also much more conservative with Foles. Part of the huge jump that Wentz made last year was not requiring babysitting like that. It shows in depth of drop, depth of target, RB targets, etc etc etc. I know the broadcast had some stat about Foles vs Zones, but that's really missing the point entirely. Before yesterday, they moved to Base 12 to get to those situations. Their TE talent will slaughter single High from 12, so you force teams to play softer and get Foles into his bread and butter YAC production.
Yesterday's game plan called for Foles to do more against Man and he really couldn't do it. The Bears play almost entirely Zone. The reason they ran so much 11 was to get them into Man, which is where you start to need more zip, especially downfield. When you don't have it, you end up with hospital balls and plays like the second pick.
I thought he struggled presnap in ways I didn't expect too, as he's generally very good there. There were a couple of times it looked like he wasn't seeing that the guy over the Slot was the SAM and checked to a run. That's unusually sloppy for him.