It doesn't exactly mean Lewis has more power then Ngannou, Lewis connected on Blaydes right on the chin/jaw, that's the most optimal spot to put someone lights out, Ngannou hit Blaydes on the side of the upper head, the thickest part of the skull, i mean Ngannou put Miocic to sleep with a short left hook and it took Lewis a full blown uppercut into Blaydes who also ducked into it, i would still say they have equal powerYes, the only fighter qualified giving his opinion on the hardest hitting HW, is definitely thread-worthy.
Ngannou hit Blaydes clean several times during their first fight and the fight was stopped in between rounds by a doctor due to Blaydes eye being swollen shut. During their second fight Ngannou hit Blaydes clean several times and was able to knock him down several times but the fight was stopped with Blaydes on his knees; so two TKOs.
You contrast that with Derrick Lewis who put Curtis out cold to the point he woke up in an ambulance.
I am sorry you might not like the answer he gave but it is certainly thread-worthy and interesting to hear his informed perspective. Quite a few posters have speculated Lewis has more power than Ngannou and Blaydes has seemingly confirmed that.