Deidara's Abilities:
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-C1 Explosion Release (Basic Clay Bombs)
By infusing clay with chakra, Deidara could create clay bombs which take the shape of any animal and maneuvers in the fashion of that animal. The scale of the explosion is small.
How would C1 help Deidara defeat Sasori?
Simply put, due to the versatility of this technique, he could attack Sasori from the front, back, sides - for Sasori it would be a difficult multi-front war to fight, while for Deidara it simply be occasionally yelling 'Katsu' and reaching for more clay in his little satch.
-C2 Explosion Release (Dragon Transformation)
By releasing chakra infused clay from both his palms, Deidara is able to create a large dragon. With this dragon, Deidara could safely sit on top of the beast while it flies. The dragon could also spit smaller case clay bombs which are similar to C1 bombs.
How would C2 help Deidara defeat Sasori?
While Deidara rests up on top of his dragon he could formulate an intelligent plan while swarming C1 bombs and smaller dragon bombs which would keep Sasori on his toes. At the same time, there is nearly no way that Sasori or any of his puppets could reach all the way up to the height that the dragon could fly.
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-C3 Explosion Release (The Statue Bomb)
After releasing a load of chakra infused clay, the clay takes the form of a large statue of Deidara and when detonated, releases the largest explosion that Deidara could produce with one exception.
How would C3 help Deidara defeat Sasori?
If Sasori is pushed to his trump card which is his '100 Puppet Technique' then Deidara would simply use C3 while sitting on his C2 Dragon and yell Katsu. This would destroy nearly all the puppets if not all and most if not all would have the puppets remaining have severed chakra strings.
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-C4 Explosion Release (Microscopic Clay Bombs)\
Using his own mouth, Deidara releases clay which produces a large statue which erupts and releases a countless number of tiny little bombs which attach themselves to living things and then detonate destroying the being at a cellular level but the instrumental backdraw is that you must inhalfe it.
How would C4 help Deidara defeat Sasori?
Unfortunately, this jutsu is completely useless against Sasori. Sasori is not a human but a puppet and the only living human body part he maintained was his living core of flesh and therefore Sasori doesn't contain a respiratory system and can't inhale the C4.
-C0 Explosion Release (Ultimate Art - Massive Suicide Bomb)
Deidara reveals the mouth on his chest and feeds it a large ball of clay which then detonates. The massive explosion has a explosive radius of 10km. This is Deidara's trump card.
How would C0 help Deidara defeat Sasori?
If all goes wrong a Deidara is somehow poisoned by Sasori, Deidara would allow his chest to eat some clay and BOOM!! It would surely kill the two as there is absolutely no way Sasori could escape the explosion.
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-Clay Clones & Hiding Mole Technique
Deidara is able to hide underground utilizing a basic earth release technique and is also able create clay clones among other similar techniques.
How would Clay Clones & Hiding Mole Technique help Deidara defeat Sasori?
Clay clones have the ability to trap the opponent in the clone while still retaining its explosive abilities. This alone could sever several chakra strings and possibly destroy the puppet in itself.
