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you can see it stopped the Jubis rampage. In the panel next to the shinobi running you can see how much of it is squished between the move. In the upper panels majority of its body is still free while the jutsu is still closing in and when its done the only part you can see of it is its squished head, the rest is between the Doton.
Mountain Sandwich doesn't explode so your comparing two different techniques. Raiton neutralizes the Doton that makes Bakuton since it can't explode with just Katon properties. If any Raiton could neutralize any Doton then Third Raikage never would have went to the next level with Nukite to break through Dodais Yonton (Fire+Earth) because his regular Nukite should have done the job, but it didn't.
Based on what? I know he counterbalanced Gian with Raikiri but that doesn't make them equal, it just means Kakashis used as much chakra as he did and he probably didn't use much since he had to baby sit Choji and Ino and stall for Shikamarus plan.
Diamond is considered the hardest mineral because it doesn't scratch, not because it doesn't break because oh wait... it breaks. Domu is tough and I think it can take regular Rasengans, maybe even Oodama, but Mountain Sandwich is on a different level from those attacks as well.
How will it not be used at this range? Will Kakuzu blitz him???
Except Kakuzu isn't infamous. He was sent to assassinate Hashirama. Whether an actual battle to the death took place is unknown and it most likely didn't happen. No one who can "tango" with Hashirama is losing to Team 10 and Kakashi.
According to DB4, Kitsuchi is actually FAMOUS in the world for his Doton. He was put as captain over tens of thousands of other shinobi and he along with the other captains are portrayed to be on a similar level. All of them are pretty much portrayed as Kage, 3 are actual Kage and it means something for Kitsuchi to be put on that level with them.