Brolys “full power”

[Jolly Devil]

So why can’t goku and Vegeta achieve green saiyan like broly by going full power mode. They became gods before being able to turn green?

[Frankie]

Because they are both fearful of each other.

[Kamiyama]

Android 18 is the strongest because she has the power of boobs.

This defeats Goku in one blow. Her power only lands critical hits.

[Hammer Of Evil]

i think the main reason is that broly just basically grew up totally insane, and cant properly control the power.

probably stronger than goku if he wasn't totally bonkers

[Emurinus]

Pretty sure in both canons Broly's considered a mutant.

[Stranger]

during the twin planet arc bulma's microwave array shoot green energy and triggers broly's mutation, which goku and vegeta's bodies parse differently both from eachother and from broly.

cell and giro's return seems kind of tacked on because broly was supposed to fulfill those narrative spaces. then when the animation production for the anime started stalling out they revived him to poop out a nonsensical ova that was higher quality than the main series.

[Uncle Sam]

I think it was that Broly super saiyan form is more about raw power & blind rage, compared to Goku and Vegeta that needed a lot of training to reach were they are atm

Think of it as one is a "natural born athlete" with natural talent, while the other other two trained for decades to be in the same sport. Still probably someone else that understand very well the lore and stuff, could give a far better explanation.