As a bettor, I wouldn't touch this with a 10 foot pole. Two fighters who typify the term "hot and cold"... Mike has the physical advantages, speed, size and when fresh, output. I will give him the edge with little confidence.
Walcott was a far better fighter than Dokes but Michael`s hand speed would bother Joe, however Walcott`s erratic movement would be something Dokes never faced, Dokes could match Marciano`s volume punching but not his power and wasn`t a good inside fighter like Rock, Walcott would take Dokes out different class.
Overall, historically I give Walcott the edge as the better fighter to take a UD, but like others with no confidence