If you can stand up to Beterbiev's attack he can be outboxed. I think Alvarez beating Kovalev was a great learning experience on how to weather a dangerous guy like Kovalev early and stick to your gameplan. I'd favor Alvarez mid to late and Beterbiev early.
There's a good damn reason Beterbiev can't get fights, but Bivol fights every three months. Something like 12 guys turned down a Beterbiev fight before Koelling said yes last time. Alvarez has the advantage of having sparred with him many rounds, but to me he's Badou Jack 2.0. As A matter of fact I think Jack has more talent. Beterbiev literally reminds me of Rocky Marciano.