Death Battle III Not Even Internally Consistent

[Reddish Mage]

Not quite; Battle of Gods and Resurrection F (the movies) were explicitly called canon before they came out.

Ultra Instinct would be out though, true.

Again this take on what’s “canon” is quite perverse.

There is no rule of literature that only the stuff that is 100% by the original author is canon or the things officially labeled with the word “canon.” Nor has the rule been explicitly made by Akira or Toei. Besides, Super has been given all the words and expressions by both as an official continuation of the DragonBall story.

On another note, I came upon this clearing out my inbox.

Goku vs Thanos, who wins?

I would say Thanos clearly wins this one as a "Galaxy+ buster" even without the infinity gauntlet (which to be fair, isn't something he can pull without a special storyline).

However, this relies on the point that most DB movies aren't canon or see this video which refutes that Broly destroyed the galaxy showing video clips of the galaxy still around.

Of course, the way Quora says this fight goes down is most amusing.