The counter that you're seeing is that Majin Buu's regen is more impressive because he survived a blast of that magnitude. Provide a counter to Buu turning him into a cookie?
Facepalm
DS can also turn people into frogs if he casts a spell on them and they don't obey him. So? Turning him into a cookie does no good. He simply reforms himself from the dimensions his atoms lie in, did I mention he has reality warping and magic? that's what I'm trying to explain to you.
Here are some of his feats
- Illusion: Creates an illusion, generally a double of the user's body. The most powerful users can delude the target into thinking he/she is dreaming.
- Judas Priest: Destroys the eternal atoms of the target (attacks atoms on physical, astral, and spiritual level), not only matter but also spiritual and ethereal bodies. It's basically a soul destroying attack erasing the target from existence.
- Regeneration: Early on he could regenerate lost limbs, even his heart. Later on he could regenerate from a head.
- Venom: Summons bacteria from the deepest circles of Hell, surrounding the target and immediately destroying him at the cellular level.
- Majin Dark Schneider: In this form Dark Schneider's magical power increases several million times (Example the heat of Exodus) and his stats rise as well, the power to absorb negative energy/hellish matter, new spells and the powers of 6 Demon Kings (Belial, Asmodeus, Astaroth, Baal, Bilt, and Paimon). As the Seraphim Raphael points out, it can take a toll on his soul, body, mind, and feelings as time passes.
- Dispel Bound: Used to cancel another spell. If the caster of the original spell is far more powerful than the user of Dispel Magic though, it's extremely hard, if not impossible to use it successfully. Simply put, the weaker the opponent the more successful the ability.
- Dragon Knight Lucifer (L01): A mecha that is summoned through the use of the Judas Pain, it can be summoned from any dimension and is much more powerful than the Majin form power up. It adds more abilities to D.S.'s arsenal as well.
- Demolitioner Gun: Two large cannons which emit a blast powerful enough to cancel out the Gungnir of Uriel's Augoeides (Note Uriel in base who even before his increase in power could destroy a star with it, in his current form it's much much stronger).
- Bloodstone: Creates a cursed space. All damage that D.S takes, his opponent suffers with the same intensity. Worked on an opponent who prior to a 130x power up was a galactic threat.
- Spell Unpacker: Allows him to use the various spells that have been packed inside the DKL such as Exodus and Giran Ira.
- Giran Ira: A micro black hole which was used to counter Gaia's Judgement, an attack well above planet level. This can be used for dimensional leap and space distortion but it would cause an entire country to vanish as a result.
- Hell raiser+Light wings+Jawbreaker: This is used to give the DKL flight. The Jawbreaker allows for dimensional separation for a tenth of a second which also broke through the storm of negative space which was sucking up air, heat, light, and space.
- Loudness All Guns Blazing: A powerful attack using all magical elements i.e fire, water, earth, wind, light, and darkness, holy magic, spiritual magic, and undead magic. Powerful enough to shatter the Dark Augoeides of a fallen Seraphim's Dispel Bound and severely wound it.
Provide a counter to sucking him into a portal dimension and keeping him trapped there for all eternity? It's simple, you can't.
He has dimensional separation abilities, won't work.