This is all true, however, Foles still has an advantage when it comes to recognizing defensive coverages and putting the offense in better position to execute plays. That's why he's out there, although, you would have hoped it'd come with better results, in terms of stats, than it has, so far.
The Bears problem right now, I think, has more to do with their inability to run the ball effectively than it does with their quarterback. We are going on 3 years now with this offense where we have a joke of a running attack. That is unacceptable. No quarterback is going to be effective in an offense THAT one dimensional. Until they get that figured out, it doesn't really matter who their quarterback is. I still lean towards Foles, because of his intelligence, but if that's the case, then he's going to have to stop turning the damn football over every game and start putting the ball in the endzone more.