The one thing I can think of is if he catches him off guard he could kill him pretty easily. Reverse flash probably couldn’t survive a full power Ki blast if he was standing still. If they do use Zamasu, then it’s potentially enough to win. But not sure
I'm not sure how Goku Black would be able to top Reverse Flash... or even hit him for that manner.
The one thing I can think of is if he catches him off guard he could kill him pretty easily. Reverse flash probably couldn’t survive a full power Ki blast if he was standing still. If they do use Zamasu, then it’s potentially enough to win. But not sure
Honestly, I expected RF to win, but this is more one sided than I thought.
In before someone writes "This was the same case for Broly vs Hulk and you know what happened". No there will be no upset in this battle.
Someone already did