Francis held an MMA guard against Joshua and got KO'd

[Kovalev's "Man Bag"]

Joshua doesn’t hit harder than Francis. He has better technique, timing and precision. Getting knocked out doesn’t mean your opponent has more power. We didn’t see Francis land a good shot on Joshua

We still don't know how hard Ngannou hits because he never landed a bomb on either Fury or AJ. He caught Fury with a counter left hook that dropped him but Fury has been dropped by lots of guys including feather-fisted opponents.

Francis was loading up on his shots in MMA. That makes for brutal knockouts. On the other hand Joshua doesn't need to load up or swing for the fences to KO his opponents and that's in 10 ounce boxing gloves.