Putting this under the alternate universe tag considering this really could have happened if Goku decided to not humor Vegeta during that battle.

Rocko1345 said:

Putting this under the alternate universe tag considering this really could have happened if Goku decided to not humor Vegeta during that battle.

You could just imagine Vegeta's pride absolutely shattering before him. To give yourself up to evil just to get a power boost only to realize that it didn't amount to anything.