Update - MHA SPOILER/Mayhem (Patreon)
Content
So I had a few complaints in Mayhem, With Daiki so easily overpowering the combined wills of the OFA users. It's not without basis, but from what I've taken from the actual manga.
This is a spoiler though for one of the latest chapters for those who aren't keeping up to date so you might not want to keep reading this post.
Basically during his fight with Shigaraki, Handjob basically gave a glancing touch to Deku, not even a second long. But that split moment, was enough for him to completely overpower the Willpower of not only Deku, but the will of the remnants within and steal a part of One For All, which include Nana and Toshinori/All Might. Their entire combined will power, was crushed in an instant by Shigaraki who isn't exactly what I'd call Will power incarnate, in fact he didn't display anything impressive will power wise to me in the entire series.
That's why Daiki so casually overpowered them in a clash of will powers without even realising.