I think people are thinking Canelo will have an easy time by just going to the body, but if Kovalev's jab is going that's going to be a big hurdle to overcome. Canelo hasn't faced anyone with 175lb power and Kovalev did just KO a larger LHW with a jab.
Yarde was able to have some success against Kovalev while being broken down and tired, but he's also much bigger than Canelo and has faced LHW power throughout his, career, as short as it has been so far. Can Canelo handle the same power? It's not like Rocky was a big puncher at 168 where we got any idea where he stood and it's not like he was even half the fighter Kovalev is.
GGG was able to cut Canelo with punches, you have to figure Canelo will face harder ones from Kovalev, and that was the area of the GGG/Canelo fights that GGG had his most success and i'd say Kovalev's jab is better than GGG's.
Canelo is in his prime, Kovalev is past his prime but is arguably still the best in the division and isn't coming off a year plus injury rehab like Martinez was. Canelo is favored but it's certainly going to be a test.