The stronger they got, the more control over their powers?

[Jermyn]

I was wondering about how it is the Z Warriors in the Buu Saga don't blow up the planet just by powering up. And I came to the conclusion that the stronger the characters got, the more control they had over their Ki. That is to say they learned how to use energy attacks more effectively as time went by.

For example, in Dragonball while the energy attacks were huge in size and explosion they weren't as powerful as later ones in DBZ because Goku and the others at the time could only emit energy in simple straightforward ways but not control it or manipulate it. It would also explain why Freeza would would have to create energy balls the size of the moon to destroy a planet outright while Buu could destroy a planet with one that was a third of the size.

[Vegeta Jr]

Vegeta stated his Gyallic Ho could destroy the Earth and during that time he was way weaker than Freeza, yet the beam was much smaller than Freeza's Death Ball.

[Toriyama Boss]

Well yeah, they got their power under control. In a Shonen Jump interview, Dragonball characters became so powerful they could destroy planets by "accident" if they were not careful!
Obviously this is a testament to their ability to control such power.

[SSj_Rambo]

For example, in Dragonball while the energy attacks were huge in size and explosion they weren't as powerful as later ones in DBZ because Goku and the others at the time could only emit energy in simple straightforward ways but not control it or manipulate it. It would also explain why Freeza would would have to create energy balls the size of the moon destroy planet outright while Buu could destroy a planet with one that was a third of the size.

Yes, when they were able to control their energy they made the energy attacks more focussed but with the same amount of energy. Like when ASSj Vegeta shot his Final Flash at Perfect Cell he powered up and then brought his hands closer together, he was making the blast smaller and more focussed while still producing the same amount of power.

[saiyanprincess]

It's similar to Nappa and Vegeta destroying Arlia before coming to Earth for the dragonballs. It was proven that they already had the power to just blow the planet into smithereens, so after Vegeta lost although he was very badly wounded and exhausted; it is surprising that he didn't wish to return to blow the place to timbucktoo.

Also thinking about Goten and Trunks during the tournament, Trunks was able to control his ki much more efficiently than Goten (who hit a building)
This was down to more stronger harsher training from his father, and apparently being a year older than Goten.

Plus if the Z fighters used really big attacks, it would be much more obvious to the enemies than if they were using a smaller more discreet attacks. Hence why when Goku makes the spirit bomb, he often tries to distract his opponent.
King Kai also quotes that Goku is 'special' and that he could quite possess the power and strength to handle the spirit bomb.

Sorry to drag on, but you have also got to think about Vegeta self destructing in a bid to save his family and friends from Buu.
He harnessed enough energy to end his own life, in addition to taking Buu with him.
It is surprising that raw energy like this, didn't just destroy the planet as Freeza did Namek so easily.

It draws to the conclusion, that the characters are in much better control as the series goes on; and the stronger they become, the more power they can harness but still use wisely.

[goodguy777]

Well yeah, they got their power under control. In a Shonen Jump interview, Dragonball characters became so powerful they could destroy planets by "accident" if they were not careful!
Obviously this is a testament to their ability to control such power.

What Shonen Jump interview? What issue or date?

[DemonKingPiccolo]

Training isn't all about gaining power, but gaining skill too.

I'll use Vegeta's Final Flash as an example. When Vegeta hit Cell with it, Vegeta was skilled enough to condense the beam width so that there wouldn't be a catastrophic amount of collateral damage, such as the entire Earth.

[SSj_Rambo]

Training isn't all about gaining power, but gaining skill too.

I'll use Vegeta's Final Flash as an example. When Vegeta hit Cell with it, Vegeta was skilled enough to condense the beam width so that there wouldn't be a catastrophic amount of collateral damage, such as the entire Earth.

Ya I agree, kind of like what I said up here.

[djkalteraphine]

Again, I'll point out the classic Kamehameha and the classic Dodonpa. Equal in power, but Dodonpa is much more deadly, because it's condensed. So yes, the more powerful, the more control they need to exercise.