Usyk wasn't fighting anywhere near his best vs Chisora lol. Usyk himself rated himself a 3/10 on the night, it's clear he wasn't taking it that seriously.
And styles make fights. The reality is Helenius will come charging forward trying to KO wilder, and Wilder will KO him.
If you don't have head movement, you're getting KO'd vs Wilder. There's nothing about Helenius that tells me he will win.
If Washington, Duhapas and Whyte can beat Helenius, Wilder most certainly will, unless, like I said, Wilder has deteriorated in the last 12 months