You have to remember that we have been reading these chapters over the last month, but in "real manga time" only 10-20 minutes or so has probably passed since they were cocooned.
Yeah. Seriously, guys. Sasuke is always an arrogant jerk. He has a lot of bad karma to work off still. He and Naruto both grew up in a lot of pain, but Naruto uses his pain to help others and empathize.