Stylistically this favours Tyson I think since they are both looking to mix it up close and Tyson has visibly more speed and power. Tyson was frustrated by guys that hit n hold and Povertkin doesn't do that. I wouldn't write Sasha off completely since I think he's got the wider arsenal of punches, higher workrate and could slip pretty well, but yeah, he's walking uphill here.
As good as Povetkin is, this is a bad match up for him. I can’t see him making it past round 6 against a prime Tyson, but he’d definitely have a few moments.
Tyson, and quick, 1-2 rounds. I actually think Povetkin is an excellent fighter. I could see him being more trouble for Evander than Mike just because of style but he would lose that too.