Kaumi isn't in anyway strong, it's a support Tech. Meaning no power. xD Failed. But truthfully, Susanoo Solid form in my opinion is better then Kaumi. While I like passing through stuff, warping and teleporting better then a huge warrior doing it all for you. Sunsanoo is way more powerful and stronger. For one, Where Kaumi is used to allow you to sneak up on someone, catch them off guard or skip past a block. Sunsanoo can do this and more. For one, all Susanoo have strong offensive. Itachi's sword, Madara's Katana and Sasukes Arrows and Black flames. Its a big **** you to most defense. Seeing how Madara's blade cuts through Creation and itach's seal souls. Secondly, Defensive. While Kaumi is better for slipping people through you. It's pretty hard to hit a Sunsanoo user aswell. One, Itachi's OP shield. Two, Madara's solid Sunsanoo soaking up the damage and Sasuke using Susanoo's ribs as a block. Seriously, it's hard to hurt a being made of raw chakra. Now, the flaws of Kaumi are two from what I see. One, if you have another Kaumi user the tech is useless. As seen with Tobito Vs Kakashi and also, you may only remain in the other world or even allow stuff to pass through you for five minutes, before a full minutes rest. Meaning a barrage would kill you, unless you was willing to use Iziangi or however you spell it to turn you surviving into real life. Also, another flaw I have noticed. To drain people into the other world, to use the techs only 'Offense' you need to be solid, meaning you loose your best defense and are open for a big old RASENGAN!!! I rest my case and my opinion. Susanoo is the strongest MS and EMS Tech you can achive, when it's in perfect form with perfect control