Canelo by decision. I could see Saunders giving him a decent fight. But I think Canelo's greater offensive firepower carries the day.
BJS makes it awkward for Canelo, but Canelo will start getting to him with gib shots and wear him down. 116-112 type stuff.
BJS at 168 is pretty average, has zero good wins there. I would back him at 160 few years ago to win a decision and get robbed but not anymore.
Saunders doesn't have the hunger anymore. He doesn't have the legs or reflexes he used to have either. You can just reach out and touch him now like coceres did. Not good. Some fighters retain their sharpness and defensive reflexes/craftyness even when fat and out of shape like Roberto Duran and James toney. When they were fat they were out worked and out hustled but you could still see the class. But when saunders isn't on point he looks like **** and he hasn't really looked on point the way he would need to vs Canelo for a few years.