I felt like this chapter was more of a filler-type chapter. It just showed the Juubi Jinchuuriki’s power against the First Hokage, who was supposedly the strongest shinobi in his time due to his rare ninjitsu and wood element. I think it also shows that the Juubi Jinchuuriki is becoming a big threat to the war and the world, so perhaps it was an anticipation type filler chapter, too.
Also, happy free slurpee day at 7/11! Grab one and enjoy Naruto ^_^