Jokes aside, it's now absolutely UNDENIABLE that the WG produces the best and peak fighters. If you've noticed the Pirate world is reigned by dude's with OP genes but barely anyone is actually a skilled warrior bar maybe guys like Katakuri and Doflamingo.
Maybe because of how he was defeated?
He was a mess after zoro defeated him.
Luffy awakened after he almost die.
Both kaku and lucci were the most hurt and lucci even more so.
I believe in zoans at least, it must play some role