Woah woah woah. That last sentence got you sounding like anybody could've stepped up & filled that role.AJ Styles was in NJPW like two years less than Omega and had two IWGP Heavyweight title reigns on top of making the Bullet Club a household name. Without AJ's run Omega wouldn't even be in that position, plus in his absence he benefited the most from NJPW starting to do US shows and focusing more on American expansion. You can put an asterisk on half his NJPW run because first and foremost he just happened to be at the right place at the right time.
Kenny most definitely built on what AJ started/continued, but he & the bucks (with cody) have taken the BC/Elite to places that AJ never would have.