IMO it's more about which team you end up on that determines how successful you will be at that level. Given the right circumstances anyone can be successful. Hell Trent Dilfer won a SB!I sincerely hope Carson Wentz does well in the NFL but when you get to that stage it is an entirely different game. He has all of the intangibles to be a decent QB along with the arm and the size but the players in that level are an entirely different breed of athlete in some cases the defensive lineman are not that much slower than some college defensive backs.
I am not a huge Teddy Bridgewater guy but if want to see what the difference is between college and the pros watch some of his college highlights on YouTube and see what you can get away with in college and not in the NFL.