at the 2:54 mark it credits Canelo with two punches that didn't land. This dude is just as bad as CompuBox
Just checked that, the left hand appeared to be blocked and short, though it's hard to be sure from the camera angle, but the right hand landed. It hit GGG in the shoulder / side of the head. It didn't connect with any power, as G tried to pull away, but technically it was a hit.
Four criteria of scoring a fight: EFFECTIVE Aggression. GGG came forward and accomplished nothing, edge: Even 25%. Defense. Canelo made GGG miss much more, edge: Canelo 25%. Clean/Hard punching. Neither guy was hurt, GGG APPEARED to land slightly more punches, but most were jabs, Canelo's more effective, edge: Even (really Canelo but we'll go with it) 25%. Ring Generalship. Canelo clearly in control of space and pace, edge: Canelo 25%.