There were very clear rounds for GGG, but those early rounds went to Canelo, because he was going forward. If 12 was won by Canelo, it was hair close. Judges saw the aggression and the chin of Canelo, and the jabs by GGG were not as significant in scoring.
I'm ok with the result, but until now GGG hadn't been challenged. Canelo has some losses, but against world champions. It's close to being a passing of the torch.