Did Dempsey have a lot more power then Jack Johnson? I've always wondered why Jack Johnson could hit Jess with everything including the kitchen sink and yet never really faze Jess at all. Yet Dempsey hit JW with one big punch and he went down and never recovered. Is this is a case of JW being at his peak for Johnson and just not willing to lose that fight along with Johnson being well past his prime. That along with him taking Dempsey lightly and thus surprised by his power. Or did Dempsey simply hit that much harder then Jack Johnson?