Are you asking who will actually win or who the judges will give the decision to? If you're asking the former, Floyd easy. If the latter, then yes expect a screw job.
Floyd by tko 10(Accumulation).....If canelo can't get floyd out of there within 6, then he is in for a very punishing night. Because the longer the fight goes it favors mayweather, especially after coming off a fight not long ago, and that means he will be more sharper.