Whis and Beerus chibi shirt. I’m sure if he put the same amount into it but he didn’t, and I don’t think we ever seen Big Bang again. I see what you mean about putting energy into an attack to make it stronger. But Final Flash is stated to be his most powerful attack. And also, most DBZ final attacks has a base level derived from whatever the power level of the person using it.
Whis and Beerus chibi shirt, hoodie, sweater and v-neck t-shirt
Best Whis and Beerus chibi shirt
Like Big Bang Attack can be a level where you can shoot it at the Whis and Beerus chibi shirt. And they can be stronger if he put more power into them. But his Final Flash’s base power level can’t be lowered to not destroy the planet. It’s too powerful of an attack. It can only be strengthened. And since Prince Vegeta was born with a power level able to blow up planets with ease.