Saul Alvarez vs GGG -- who wins?

[Ron Swanson]

Definitely a big fight that most people would love to see, but I don't think Canelo's people would put him anywhere near GGG. To be fair , it's a big ask stepping up a division and fighting one of the most Dominant powerful champions there is.
GGG probably by KO, but it would tell us a lot about both fighters to be fair.

Golovkin said he would come down for pac or nob ed, why not alverez

Why Should he? Mayweather and Pac both started at divisions way below Light Middle and Middle and would have to move up a bit to make the match. Canelo is a light Middle who has been constantly banging on about moving up to MW. in his last fight, I believe it was above the Light Middle limit anyway.
I'm not a massive fan of catchweights , but if Canelo and GGG were to compromise and meet halfway, fair enough.
if we're being honest, Canelo's future is at MW, and he wanted Cotto , which would've been the perfect first step. But I don't think he's ready to move up and take GGG's power even at a catchweight.

Canelo said recently he isn't moving up to middleweight any time soon.

GGG destroys him but Canelo would land some good shots. They wouldn't matter but he'd land some good shots.

It's really a terrible matchup for Canelo because Canelo likes to work then rest, work then rest. GGG does massive damage when his opponent isn't working.