The moment Goku and Vegeta fused into Gogeta they immediately gained a power of at least 800 times stronger than Goku and Vegeta"s base form combined.(here as to why it"s 800, Base form Vegito is stronger than Super Saiyan 3 Goku, 1 x 50 2 x 4 = 400 since form Vegito is stronger than Super Saiyan 3 I Multiplied it by another 2= 800 and Gogeta and Vegito is equal, in an interview Akira Toriyama said "that they both are an equal trump card")
Standing in the arena, Gogeta looked at Same then Immediately jumped up to Super Saiyan blue.
Gogeta"s power immediately jumped up by at least 50,000,000 times stronger.
(here comes the explanation)
[Full power Vegito was said to not even be able to hold a candle in front of beruus.
As previously stated Vegito is 800 times stronger than Goku and Vegeta"s combined power. So the multiplication for the supersaiyan form is 800 x 50 x 2 x 4, ill obviously low ball this to a 100,00 times.
Then add super saiyan G.o.d on top of this multiplication, so obviously super saiyan G.o.d goku is way stronger than buy saga Vegito so I"ll just give G.o.d form a multiplier of 10, so that jumps to 1,000,000 times bad form Vegito.
Then we add super saiyan blue, which is just super saiyan on top of super saiyan G.o.d.
So it will be 50,000,000.
Yeah, that is an op multiplier.
I might be wrong, you can multiply this again by 2 again cause adding goku"s base form and then adding vegeta"s base form, but I"ll just leave it at this low ball.]
With that increase of power it shock the whole infinite void, Sam looks day Gogeta then immediately got ready to fight.
Gogeta disappeared and immediately Same felt him coming towards him.
Sam could easily react to this as the power shown by Current Gogeta was below MUI Goku.
Without even feeling any pressure Sam defended against Gogeta"s attack then immediately tried to counter but Gogeta did the same thing and immediately retaliated back with barrages of kicks and punches.
Then Gogeta jumped back and immediately shot a bunch of ki blasts towards Sam then as he was flying back he released a roar before his aura changed and tapped into Super Saiyan Blue evolution.
His power increased by 20 times and then immediately charged Sam without giving Sam a chance to react to get back up from the barrages of attack that landed on his body none-stop.
Gogeta flew towards Sam and puned him right in the face, which caused Sam to be pushed in the ground and land on his back.
A high crater was created from the power that suddenly hit the stage.
Immediately right after that Gogito went back to the sky and brought his hand forwards.
"Big Bang Kamehameha"
Gogeta said the following lines before sending a huge ki attack towards Sam, Sam was still in the crater laying down when the attack hit him.
The power caused the crater that was already there to expand by three times.
Gogeta was pumping in all of his power when suddenly the ki attack was reflect and was sent flying towards the sky.
Sam stood up with a bright smile before saying "that hirt a little, just a little though"
Looking at Gogeta, Sam"s smile disappeared then immediately kicked Gogeta to the ground, but before Gogeta could hit the ground with his body, he did a flip and landed on his legs.
When he looked up he saw Sam coming down with his arms in front of him, in an X position.
Gogeta immediately copied the same pose and put his in front of him.
Sam hit Gogeta and slowly pushed him down, Gogeta"s legs slowly started to give up on him and he was about to fall on his knees when suddenly another power up happened.
Currently Gogeta was using Kioken time 20 and increasing his power by 20 again.
He slowly pushed Sam up then immediately got out of the way, and as he did that he sent a kick towards that was blocked by Sam"s hand before it could hit his body.
Sam was sent back again then in they second Gogeta started firing ki blasts towards Sam, that all were dodged with ease.
Looking at the development Sam decided to make something out of this fight, Sam powered up, increasing his power by 100 times.
Then immediately started to charge towards Gogeta, also as he did that Sam said "this will be the last time I power up before I defeat you".
Gogeta ignore Sam and started to charge towards Sam the same way Sam was doing.
Slowly the distance between them decreased and the first thing they did was full power punch that meet each.
The two first met each other and started send shockwaves outwards, the edge of the stage started to crumble and slowly fall down towards the infinite nothingness.
Lighting started to form around their fists and started to hits the stage, each lighting strike cutting deep in the ground.
They both slowly pulled their punches before sending a kick that basically copied their previous punch.
The next clash was about to the same thing but before that could happen Sam grabbed Gogeta"s wrist and started to whip like a whip and hit the ground with him.
He was able to do this a few time when suddenly Gogeta fired a ki blast causing Sam to let.
Gogeta then disappeared and appeared behind Sam and sent kick towards Sam"s head.
Currently, Sam had kept his power at the same level as Gogeta, which resulted in the kick landing and sending Sam flying to the position that Gogeta was just a few seconds ago.
Go get a didn"t give any chance to Sam and immediately got down from flying and tried to stomp Sam.
He tried hit Sam"s stomach but before it could land Sam grabbed the leg with two hands and without wasting time pushed Gogeta back.