Ray Charles can see Dricus du Plessis < Israel Adesanya as a pure kickboxer.
However, Ray Charles can also see that du Plessis is a physically-stronger, rougher, tougher man than Israel Adesanya.
du Plessis made Robert Whittaker look like a teenage boy, on the ground, literally manhandling him. Adesanya was beta on the ground, in the second fight, when Whittaker took him down.
It doesn't take a genius to figure out that, if Dricus du Plessis takes Adesanya down, Adesanya is in trouble. du Plessis has already intimated that his main goal is to "get his hands on" Adesanya, and make it a rough/tough grappling-fest.
That said, I do believe Dricus du Plessis has enough technical skill, as an experienced striker + the stronger man, to impose himself on Adesanya, and get him to the ground.
If the foregoing comes to pass, I think Dricus definitely can finish Adesanya.
As far as the Paulo Costa comparisons go, I think Dricus is tougher, smarter, and rougher than Costa — who basically "choked in the headlights" when he faced Adesanya.
I don't think Dricus du Plessis will choke when he faces Adesanya.
He rose to the occasion and decimated Whittaker.