It was a perfectly landed power shot; a beautiful one which came in perfectly and landed. Marquez definitely came out stronger tha usual, but hear my word, he won't be like that for any future fights. And even with all that, there have been harder hitters in 147
I doubt anyone thinks he's Tommy Hearns. But, pound for pound, he's always been a very good puncher. By a damned good combination of brute strength, technique and timing. Always. Obviously, you watch the Pac kayo like Pac's Hatton kayo and you might be inclined to overrate their single-punch power at 140-147, the both of them. But they still both can hit. For undersized welters, especially.