Munguia ran from Janibek when he was at middleweight. That tells you how much confidence Munguia had when he was the mandatory.
Janibek beats him, I think on points. Would be a good fight but I'm just not sold on Munguia's power against the tough guys with a tight guard (Canelo/Smith/Derev/Rosado) especially at 168. If we can't see Canelo Bena, I think Canelo Janibek is the one to make at 160.