There's no point in Vegeta stans even getting their hopes up.
Vegeta's role in the series is and always has been to be the guy the villains beat up to show they mean business. Frieza transforms into his final form? Beats up Vegeta to show how strong he is. Cell reaches his perfect form? Beats up Super Vegeta to show that he means business. Buu turns to Kid Buu? Hey Vegeta, go let Buu beat up on you for a while so Goku can make his spirit bomb. Strongest opponent in the tournament? Beats up Vegeta to show off his time leap move.
I'm sure it'll be the same here. Vegeta will probably start out with the advantage against Black and start feeling himself. Then Black will use his Super Saiyan Rose transformation and beat up Vegeta to show how strong he is now.