All you did was literally proved my point about King for the most part. What you've listed all falls under the category of either speed or tank except marital arts, haki and flight.
You're forgetting the opponent is Big Mom, a natural tank, King literally has 0 meaningful swordsman/slash feats that we can say would be effective against Big Mom (his slashes did nothing to queen I'm his zoan form)
King's martial arts would hardly help against Big Mom, it's not a named/effective martial arts like Fishman karate hence its literally useless.
Invisible speed? Only Lanji has that (mind you this is the only time the author highlighted a character being so fast thathe became invisible) you're giving King made up feats. At this rate we could say pre time skip CP9 has invisible speed feats because of Soru blitz...
At the end of the day the question that ShishioIsBack asked is whether King would be more effective against Big Mom than Kid in a 2vs1 senario