Daniel Bryan was objectively the bigger moment, but Kofi's was by far the more impactful personally.
Bryan was already a multi time world champion by Mania, and he and Orton had already traded the title several times during their feud. The wow factor with Bryan came from the fact that he was supposed to face Sheamus until WWE's hand was forced.
Kofi had a bit of a push ten years ago until Orton wanted to be a little fakkit and got it derailed. Then he spent the next ten years in the midcard as a jobber or a transitional champ until New Day, which pretty much signaled the end of his singles career. He'd have his little Rumble saves and ladder match spots and then never come close to winning, and it looked for years like that was his ceiling. He and New Day probably would have been in the multi-team tag match or doing a skit with Elias until opportunity fell into his lap with Ali getting hurt, and he got so over they scrapped all their Mania plans and gave him not only his first world title, but both his first ever singles match at Mania and his first ever singles match for a world title.
So there's no question to me that Kofi's moment was much more impactful than Bryan's. If Bryan's never happened, he would still go down in the history books as a four- or five-time world champion, and he would have got another shot if he hadn't been injured.
If Kofi's never happens, who knows if or when he ever sniffs the world title picture outside of Money in the Bank or multi-man matches that he wouldn't win, and there was a very good chance he would have retired without a world championship.
The advantage Bryan's story had were a) it was much longer, and b) WWE being stubborn made it even bigger until they had no choice. They didn't make that mistake with Kofi because they almost immediately took the ball and ran with it.