^^ Yes, when everything seems to be equal, just go on age and pick the younger one. In the final press conference, both are ready, although I think Bivol has the mental advantage as Beterbiev is somewhat affected by Eddie Hearn telling that he is arrogant.
So it's two fold, whether the psyche war is affecting him, or he will used it to motivate itself.
For me Bivol has a good power, not that he can knockout anyone, decent that it can really affect Beterbiev if Bivol is going to throw volumes in every round and not let Beterbiev be comfortable in setting his traps.