Board Thread:General Discussion/@comment-25814498-20150505201606/@comment-5780397-20160305205159

That was in the narrator's explanation, when they talked about Emperor Time, you cannot have 10% efficiency in a category that's not your own. Besides, since Netero is considered a Nen master, this means he has a crazy Level in Enhancement, which also probably means a crazy Level in Emission. If his Level is so much higher than everyone else's, he would still be much better at Emission than any emitter.