You long for the good ol' days and have no context or perspective in how you view this current crop. Everyone is trash to you. Ryback could do just fine with Brock.

Anyhow, you could tell a compelling story with these two. Just book it like the basic outline of Rocky III.

The firts match could be a competitive squash. Ryback gets a few shots in, but Brock dominates a short match or even a fight segment.

Why?

Because Brock is here to show him what a real monster looks like, so he does. And that makes Ryback dig deeper. He loses his sauce for a minute, and everyone attacks because they think he's vulnerable. He beats people but they still taunt him over the loss to Brock. So Ryback starts doubting himself. Make it a psychological block he has to overcome or whatever, but in the end, Brock awakens a new level, something harder and stronger and more fierce in Ryback.

So you sell the next match or two by showing how Ryback builds himself into a bigger, badder machine, beating Brock in a ruthless HIC match.

Or, you just book Ryback to be Brocks equal. You make that shit Clash of The Titans. You make sure they go toe to toe in the baddest hossfight we've ever seen. It's not as compelling a story, but it works just as well to build Ryback into the beast they want him to be.

The key is to make it a war, an all out brawl. It's not a technical masterpiece, but so long as you emphasize the brutality of such a match, the payoff is huge and you've pushed a new star to a new level.