Why the fusion boost for Goku and Vegeta is greater than the kids.

[Let's Go Fearless!]

Because Goku and Vegeta can go beyond than SSj unlike the kids, they can't.

 

[Future Warrior]

There was never a fusion multiplier to begin with.

 

[Let's Go Fearless!]

Exactly,

 

[GokhanDBZfan]

It's not a bigger ''boost'' for Goku and Vegeta, they just make a stronger Fusion.
If Fat Boo were to somehow use Fusion with Goku, they'd make an even stronger Fusion.

 

[Boo Brand Milk]

Plot × suspension of disbelief = 1.4

 

[sei'taer]

The fusion boost for goku and vegeta was greater because reasons. Literally something about their rivalry made them so much stronger than the kids even though the kids were rivals too.

 

[Let's Go Fearless!]

It's not a bigger ''boost'' for Goku and Vegeta, they just make a stronger Fusion.
If Fat Boo were to somehow use Fusion with Goku, they'd make an even stronger Fusion.

I don't think there's a difference there, but then again i don't about English.

The fusion boost for goku and vegeta was greater because reasons. Literally something about their rivalry made them so much stronger than the kids even though the kids were rivals too.

Fusion dance right?