Balor looked small compared to Owens, who looks very short and squat on the main roster even next to guys like Rusev, who everyone thought looked short and squat until next to Owens. Balor is not much taller than Neville, who looks to be about Rey's height.
The Punk/Brock match, while fun, was pushing the limits of believability within the context of Brock. And that was pre-Brock who ate part of Taker's soul and completely squashed John Cena. As this story with Taker continues, he's going to have completely subsumed all of Taker's aura into his own. Finn Balor is not the guy to beat that guy.
The Hogan/Andre comparison is ridiculous. Hulk Hogan was a MASSIVE human. It wasn't big guy vs tiny guy. It was giant vs also huge guy. Hogan was billed as 6'8", 300 some pounds back then. The only guy that really matches up size-wise with Brock is Cesaro, and even then, Brock has a solid 70 pounds and startlingly wider torso and shoulders on him.