Here I'll talk about destructive power of DBZ characters, I'll show feats and statements, and then I'll try to explain them the best I can, and hopefully start a nice little debate.
Roshi destroyed the moon with PL fewer than 200
King Piccolo stated he will destroy 1/43 of the earth with PL fewer than 300
Piccolo Jr destroyed the moon with PL fewer than 500, without even powering up
Nappa effortlessly destroyed entire region just by lifting his fingers, with PL around 5000
Vegeta fired Earth busting beam, which was stopped by Goku, vegeta had PL 18 000.
Since the Earth was saved by goku, and thus remeined undestroyed, we cannot be absolutly sure if he was really able to destroy it, but consider it he was massievly more powerful than moon busters, I think we should take his statement seriously.
what proven moon busters think about Vegeta and Nappa:
Frieza effortlessly destroyed planet Vegeta, with PL 530 000. Planet Vegeta had gravity 10x larger than Earth, which almost certainly means it was much bigger or much denser than the earth.
SSJ Goku had a Power level of 150 000 000.
Frieza also destroyed a Planet Namek, in his final form,
but after this they stoped showing high end feats.
It is clear that their power was increasing constantly, but we had no feat or statement from which we could precisely determine by how much.
SSJ Goku ( on namek)<Mecha Frieza<<< SSJ Trunks<<<SSJ Goku(pre android saga)<<<<<SSJ Goku (android saga)<SSJVegeta android saga<<Android 18<Android 17<<<<Cell (after absorbing people)</=Android 16<<<<Cell (after absorbing 17)<<<<Vegeta (after training in time chamber)<<<<Perfect Cell<<<<Super Perfect Cell
That is until Cell stated his controversial solar system busting statement, which was confirmed in the official DBZ handbook.
Was he really able to destroy a solar system, and what does it even mean to destroy a solar system?
He said „ I have gathered enough energy to destroy a solar system“ which is a statement that can be interpreted in several ways.
1.He can create an explosion big enough to cover entire solar system and destroy everything within it's range.
2.He can destroy the sun with 99% of his power, and then use the rest 1% of his power to destoy planets and moons.
3. He can destroy the sun, which would then explode and destroy the rest oft he solar system
4. He can destroy the sun, which is technically the end oft he solar system.
We know that character like Frieza in his weakest form with PL 530 000 are casual planet busters, and we also know that SPC is incomperably more powerful than him.
Or in other words
Casual planet busters<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<SP Cell
So how do we quantify this massive power difference between casual planet busters and Cell?
I think that accepting his statement and the statement made in the official DBZ handbook is the best method we currently have.
If we decide to ignore the statemets made by Cell and his creator Akira Toriyama, what better method do we have to quantify this massive power difference between SPC and casual planet busters? Clearly we can't just ignore something like that, and put him in the same category with first form Frieza?
its translation :
"An aura with sparks like flashes of lightning and an upright, combative hairstyle are the distinguishing features of this, the strongest Saiyan warrior! One's personality also becomes aggressive; even the ordinarily gentle Gohan started to enjoy battle! Its power is enough to push back even Cell's energy bullet, which had enough force to blow away the Solar System!"
SP Cell<SSJ2 Gohan<<<<<SSJ2 Goku</=SSJ2 Majin Vegeta<<<Fat Majin Buu<<SSJ3 Goku<<Mystic Gohan <<<<<Buuhan<<<<<<SSJ Vegeto<<<<SSJ3 Vegeto
In the end kid Buu effortlessly fired an earth busting attack, which was easly countered and stoped by Vegeta, who apparently focus it's explosion.
Then Buu, created an energy ball so powerful that both Vegeta (who had access to SSJ2) and Goku (who had excess to SSJ3) were unable to stop.
So the Earth end up destroyed
List of statemnts
I've seen people asking, if all top tier DBZ characters have enough power to wipe out a planet with a fraction of a percent of their power, how come most of their explosions are only mountain or city level?
To me, obvious answer seem to be that they focus their explosions on a smaller area, but they remain equally powerful
Bassically, just because explosion is smaller it doesn't mean it is less powerful.
Self destruction is perfect example of concreted explosion.
We know Vegeta used his entire power to peerform this attack, yet the explosion was much smaller then a moon explosion
So was the explosion focused or is this the limit for SSJ2 Majin Vegeta?
Nappa effortlessly destroyed whole region, but when he used his most powerful attack attack the explosion was incomparably smaller
Here, I think, Vegeta focused his attack, to prevent Earth from being destroyed.
See statement from Trunks, Vegeta made his attack smaller.
But what I don't undersand is why people are using this "most of their explosions are just mountain busting" argument only against DBZ. In almost every fictional universe explosions can be focused.
Take a look at this scan, Odin KOed SS with a blast, and explosion was not bigger than car explosion. Does that means SS can get KOed by a car explosion? Ofc not. that explosion obviously had enough energy to destroy planets, it was just focused.
The Molecule Man once hit PR-Beyonder with enough power to slag a billion dimensions , yet the apartment they were standing in(let alone a whole universe) was unfazed
here superman got destroyed by an attack that didn't even destroy a city.
- here Thanos got a little bit hurt from a city busting explosion, or was this a focused planet+ explosion?
here thanos (with shields) got hurt from an explosion smaller than a house, or was this focused planet+ explosion?
I think all those explosions were focused planet+ explosions, and I apply the same logic for DBZ world.
One more thing I have noticed is that they panic about earth might getting destroyed only when someone is charging their full powered attack. I think that is because when they go all out, they can't fully control their attacks, and it is enough for them to lose control over 1% of their power, and the earth would be vaporized.