I'll take Stafford. The Lions are a pass-only offense. They do not have a choice, because the roster is littered with running backs who can't keep themselves from being suspended, injured, or both. Nor have any of them proven to be consistent.
Newton's pure athleticism and rookie season make him a great draft target, but he rushed for 14 touchdowns last season. He's not going to do that again. They gave Deangelo Williams 5 years, 42 million a year ago, and today they've given Jonathan Stewart 5 years for 36 million dollars, and they have signed Tolbert at fullback. Newton will pass for close to 4,000 yards because that's becoming routine for NFL offenses. He will run, but he's not going to do what he did last season in the running game, because he may be built like a linebacker, but they're looking long-term and they are going to minimize risk by using all of their weapons in the run-game.