Kaguya could've won Easily

[Seventh Sama]

^What's with people saying she's stupid?
They act like these fictional characters have a mind of their own.

OT. If you've noticed. Lots of villains get nerfed big time.

 

[ShinjuMadara]

Or she could've teleported them INTO the lava when she first teleported instead of above it like she did with the ice dimension. Huge plot no jutsu.

 

[flyboyissac]

Plot, Kaguya without plot or storyline would have killed them all in a instant