Saunders will try to be as elusive as usual but he has been nowhere near as busy as Alvarez, and so what could once have been quite a large gap, will now have closed considerably. I don't think Canelo struggles against Southpaws as was once claimed and he will be much more comfortable at the weight than Saunders who is never going to be a big hitter. It still has plenty of intrigue but I think at this point Alvarez has improved massively while Saunders has stagnated. As much of of a twat as he is outside of the Ring, I hope Saunders can pull it off or at least expose some of Canelos flaws and show us how brilliantly he can string combinations and feints together himself. If he chooses to tag and move keeping away from the big Mexican for 12 rounds, then you can't pretend that is not a valid tactic. It will just give the Judges another excuse to mark him down though, so I think it will be hard for him to get a points win without trading, and that is not going to end well for him.
Wider points win for Canelo than he deserves, in a close contest were he never looks really troubled.
Billy may even have to do a Fury/Lazarus and get back of his arse at some point if he wants to risk laying traps.