I am pretty sure Gogeta 4 is stronger than Brolly, considering it kicked Shin Shen Long (Forgot the name, but I think it is this one) without even moving, he would have killed it in seconds but he decided to toy with him.
Brolly while a lot of raw power is very unstable and unbalanced, whatever the origin of the Legendary Saiyan's power is, it gives the body power without training most likely making strain.
Now, in other comment I said Superman, but that is only in the Sun. I am not a comic reader but I do know the Sun makes Superman uber so he deserves a mention.
In all honestly, Goku's base form is the ultimate warrior following DBZ's logic Goku will eventually win, no matter what he will pull a new transformation out of his ass and kill you.
Dragon Ball Z is known for the greatest, largest, pointless, raw POWER in all of anime.
A little background on Dragon Ball Z, incase you’ve been intelligently sheltering yourself from it. The main character of DBZ, Goku, spends the entirety of the series gradually becoming more powerful until at the end becomes a God. All of DBZ works like this, “…..well, it’s time to res- AH an even BIGGER more POWERFUL bad guy who wants to blow up the earth for no good damn reason, we must defend it at all costs!”
“AHHH- every *** person is dead except for Goku and the planet has been ass raped again.”
“Ha! Goku is almost dead, and OH he pulls tons of power out of his ass and kills the bad guy.”
“Everyone comes back to life, well it’s time to res-“