Beterbiev wouldn’t have the size, Machen isn’t one of those guys who’d be making 175lbs with modern weigh in times, he was a legitimate 195 or so lbs. I also don’t know if Beterbiev would outbox him, Machen was solid on the outside, he may be able to get the better of the jabs and just tie him up in close. Could be wrong though, there’s a lot of unknowns with Beterbiev above 175lbs.