[SNOWBALL]

F=MA

Someone else correctly noted that Floyd's A is way way higher than yours. However, they failed to note that his effective M is higher than yours too. Putting weight behind a punch is actually pretty difficult. It's not intuitive at all. With some basic instruction, you can do it semi-competently on a heavy bag. A bit more, and you can do it on focus mitts. More still, and you can do it in more advanced focus mitt drills. To be able to do it versus a moving target who hits back is the hardest of all though.

Hitting with your mass behind your punch requires excellent muscle memory, footwork, timing, body positioning, etc. Conclusion: Floyd definitely hits a lot harder than OP.