Bloom & Stella (Winx) vs Goku Black & Future Zamasu (DBS)

[Witch_Bernkastel]

They fight on an indestructable planet.

The two Winx start in Butterflix and can power up whenever they want.

Goku Black starts in SS Rose.

Equalize speed if needed for a more even fight.

 

[Witch_Bernkastel]

I will post the dc and durability they get:

Winx has been pretty weak for most of its run, but it has gained a lot of power in the last three season.

Bloom shares a power source of a character who created the universe: https://youtu.be/E8d0JtgLvPI?t=6m32s

It says magical dimension in the video, but magical universe is used as a synonym.

https://youtu.be/gXMGx3bWQhc?t=1m33s

Of course it turns out to be not a myth as the next few seasons (and the first season) reveal.

Finally in season six, Bloom tests herself out in the Vortex of Flames, which was used as a testing ground for those who had the Dragon Flame: https://youtu.be/fPApKHOh3gU?t=3m31s

Bloom, of course, over comes it. So she should get universe-level scaling here. And this was with her Bloomix form.

Her Bloomix is below Mythix and that is below Butterflix. So she's couple of forms stronger than baseline universal. It should also be noted that the universe creation was done merely with the dragon's breath, which implies an large amount of casualness with that feat and Bloom's scaling.

Of course, this has been cross-checked with the Italian version. Though the first two episodes are on Netflix and have the Italian audio, so you can just pop over there and see yourself.