I think thats a fair characterization that Wentz is a better QB in terms of raw physical talent and that Foles seems to thrive in a WCO.
But I also quickly checked some stats. So far in 2019 , Wentz has 240 pass attempts . 59 of these went to Ertz, 43 to Agholor , and 41 to Jeffery. So 24% (59/240) of the passes went to Ertz . 1 out of every 4 passes is hardly keying on a receiver when a team typically runs formations with 3 to 4 receivers? In 2017, the last time Wentz played almost the whole season (13 games) , Jeffery had more targets than Ertz (120 to 110) .