We must also consider that Lemieux is only like a year older than Canelo, is young, not out of his prime and has faster hands than GGG with maybe even more power imo. Also Canelo doesn't posses a telephone pole jab like GGG has which thwarted Lemieux's game plan. Canelo's preference to engage with throwing more hooks and using less of his jab could play into Lemieux's game. Imo.
Taking on these monster hitters in back to back fights isn't good for his future health. I doubt he'll go straight back in there against another big MW puncher so soon.