I can't see the outcome being much different, maybe Campbell lasts till the second half of the fight but he gets dominated and stopped. That's if he gets past Haney for the WBC belt.
Campbell does better for sure but will probably retire in his corner 8th round, will still get completely outclassed
One interesting thing about this fight is Barry Mcaguigan trains both Campbell and Josh "Jockachenko" Taylor. Even if Campbell gets a pasting, it could be a good learning fight for Mcaguigan if he wants the tartan Tornado to attempt to distort the matrix in the future.
A lot better yes, he is taller, longer reach, good jab and good movement and I.Q. Still gets stopped IMO but later on, possibly to the body.