Board Thread:Naruto Discussions/@comment-30323490-20170530162816/@comment-734582-20170531100157

Vladosaurus wrote: @Rachin123 That was a sword, not a cannon blast. How could Naruto get hit by the entire sword since he isn't a match for it's size? It matters because of energy density. It makes a huge difference if you fire a Bijudama, or take the same energy and spread it over a larger distance, or over larger times.

Toneri's sword contained a lot of power, but that power was spread over a humongous distance. Energy-density-wise, it wasn't stronger than a Perfect Susanoo slash. It was spread over a much greater distance, but the damage to Naruto wouldn't be worse than a Perfect Susanoo slash.

Naruto also didn't tank the attack later on, but countered with a technique of his own strength (gathering all his power in his hand), which again means that the energy density of that attack only had to match Toneri's. In stead of protecting his whole body, he can put that energy into just a small area and thus create (with the same energy) a much stronger defense.

Time is the difference between a fire and an explosion. Fire can cook a steak, but the same energy in a fraction of a second can create a lethal explosion. Area makes all the difference too. A blowtorch applies a lot of energy in a small spot so you can cut metal, even though the same energy spread over your entire workpiece will just heat it up a little.