Up to a point, yes - as it was, Usyk could fight within himself and save plenty for later rounds whilst clearly winning the earlier ones... Which he didn't really need to save, I don't think. If Fury came in lighter and faster? Usyk would've had to work harder and faster - but I think he probably had it in him to do it, to be honest, and I think he'd learned Fury more than Fury had learned him... So arguably Fury trying something different actually made sense, he just didn't do it very well and that's arguably not surprising considering he was fighting mother nature seeking more power when that's never been his forte.