In my now sixth year covering the team, the only comparison I can make with Wentz is Sam Bradford, who the Eagles acquired during the 2015 offseason after he tore an ACL during the 2014 preseason with the Rams. Like Wentz, Bradford tore the ACL in his left knee.
Here's what I wrote about Bradford way back on June 1, 2015:
Bradford barely moved his feet during his reps. He had deliberate movements, whereas the other quarterbacks had much more natural-looking footwork. Any casual observer could clearly see a difference. He's slightly more mobile than a JUGS machine right now. We'll see if that changes as the summer progresses.
Wentz was far more mobile in practice on Tuesday than Bradford was in June of 2015, despite having roughly four fewer months to recover. If you'll recall, Bradford played in preseason games, and of course was ready for Week 1 of the regular season. Pencil in Wentz for Week 1.