Who would you say was the harder hitter of the two and how would you compare their punching power? I think they were very close in terms of power. Both spiteful punchers although I think Napoles put his punches together a bit better with more fluidity. Duran was a bit more heavy handed.
Duran carried his power up higher, so if there's a distinction to be made that would be it. Interestingly enough, Napoles retired at 81-7 while Duran went 81-7 through his first 88 fights. Duran had 60 KOs to Napoles' 54, but had fewer fights above his natural weight. Napoles' entire reign took place above his natural 135-140.