No. Wentz will not be a runner at the NFL level. Like Blake Bortles or Andrew Luck, he'll be a threat to pick-up yardage with his legs if he gets outside the pocket or gets a seam. But you're not drafting him to run. You're drafting him to be a pocket passer. And there's more than enough film out there that shows he has that ability. He has some mechanical flaws in the lower body similar to the ones Blake Bortles and Jameis Winston had coming out. They've improved during the pre-draft process but he'll need to continue to progress. And yes, he'll have to work on his pocket movement and footwork.
That all said, these are things that can be developed and are often developed. Wentz has a lot of things that can't be taught along with a very rare athletic skill-set.(6'5" 237 with mobility and a rifle for an arm) Wentz has the mental acuity, accuracy, and instincts need to be great. He's not as polished as Goff but given time, that'll come. I do prefer Goff because Goff is more polished but if Wentz is the pick, people will end up being very happy with the pick. Wentz has a ton of upside and is already a very talented QB.