In reply to GravitySucks:
Always hard to tell who will make it to the top - someone like Barguil or Pinot may have the talent but possibly not the mentality to cope with the pressure of GC and are happier going for stages.
3 other names that you didn't mention would be Julian Alaphilippe, Bob Jungels and Louis Meinjies (sp). The first 2 are both on Quick step, both on the vuelta and I would be suprised if one of them - probably Jungels - takes the race lead today.