One fight just pad stats though, 3 knock downs against eddie etc. Brimage he dropped what 2-3 times?
Good stat but easily paddable, guy like rumble knocks people dead when he drops them so only ever gets 1 a fight.
Shows the lack of finishing power more than anything.
You point is noted but your example doesn't back it up:
If we just look at his LHW fights where he had more KO success:
0 KD's in Cormier 2 -- 22 sig strikes landed(lasted 3 rounds)
0 KD's vs Phil Davis -- 45 sig strikes landed (3 round fight)
0 KD's vs Bader -- (1minute fight rumble won by TKO on the ground)
1 KD vs Cormier 1 (Cormier survived and finished Rumble)
The other 3 fights he won by T/KO.
So he had KD's in 4 of 7 fights and only 3 of them resulted in a finish. Conor's better at finishing opponents by KO.
I'm on a hotel wifi with a small tablet so it's not as easy to do a full rundown as I'd like but suffice it to say rumble has power in his hands but doesn't put opponents down the way McGregor does. Even if you only count 1kd per fight Conor has a better clip then rumble. If we only look at Conor at LW or WW there just isn't a large enough sample size to draw any conclusions but the numbers break down to 50% KD which would favor rumble. So in that special case rumble wins, outside of it there isn't really a contest.
I'm not arguing Rumble has more power. I'm saying he's not as good at landing the shots and putting his opponents down as Conor is. The numbers back that up.
A better analysis would look at each of the respective opponents and weight the rate at which they are KD'd/KO'd and by each of their opponents KD/KO stats recursively. 2-3 layers of opponents would probably be enough to minimize the margin of error to a negligible number. But none of that is really necessary when one guy has so much more success then the other.