I don't think anyone would disagree that Sanchez has the better stuff, and if everything goes right will have the far better career. He's also a much higher risk to bust. Stroman will probably be a #3 starter (maybe #2 if he's lucky), but he's reasonably likely imo to reach that projection. If we had a poll on who had the higher upside, there's no doubt that Sanchez would be above Stroman.