From the way Nero is describing it, Vergil is meeting the concept of this being entertaining with a high degree of skepticism. But perhaps Nero is just describing it poorly. Especially if it apparently has given him some ideas in managing demons.

...It does not occur to Vergil that any of it was applied in their bout. Something else occurs to him, instead.

"You could always check on the Relic," he says. Vergil never uses the thing himself, but that doesn't mean he's ignored everything about it. "It is my understanding some use it to watch television and movies on it. Perhaps there is wrestling there, too."