First you underrate Kakuzu's Domu feats to claim that Choji is the only feat Kakuzu's Domu encountered. You ignored that a Buiju crushed him completely to the ground and also he tooked down a
sealed(key word) Iron Wall with a single Domu Punch:
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Not even close:
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Part 1 Gaara broke his bones stop playing weak comparisons.
Gaara does it once then speculate that he has improve sinking his opponents. Not that it matter because he will never sink Kakuzu in that position.
Again underplaying Wind Release when the radius of the attack was shown to cover a whole large area. Then those who wasn't hit by the attack was still blow from the pressure of the attack. You want to make a circular argument that Gaara 's wave is still bigger but it was still be irrelevant as Kakuzu just made a safe spot from using Wind Release
Manga show that it is slow: It took two pages showing Kimi slowly getting buried. You also took my words out of context. I explained that Domu was only meant to counter being pressurized from sand burial. As for sinking, Kakuzu simply using Jingou to escape. By either attaching to Gaara or trees. Or just both at the same time.
1.) I will avoid the circular argument as which is bigger as they are irrelevant. The scale has nothing to do with the attack power that Wind Release has, as Wind Release will simply overpower whatever point it can reach. So regardless as size Kakuzu still counters from being consumed by sand.
Domu was used to argue from the binding of Sand. Gaara made a claim that he will sink Kimi 200 meters. That claim does not mean Kimi successfully sinked 200 meters to the ground, then he countered. Kimi countered as soon his whole body was buried (which explained why you hear his voice using seeding ferns tech). You already arguing that Kakuzu has already been sinked 200 meters while I am arguing in the mist of getting sinked. So yes Jingou attach on gaara or trees will be perfect.
As for those Sand drops I can't take that featless attack seriously as it does no damage to anything in Kakuzu's position.