Originally Posted by Emissary of Justice
Orochimaru isn't a sensor type. He alone wasn't sensing Naruto's chakra. All four of them were and they were ONLY sensing him because it was so immense. Juubi's appears to be nature, which they can't sense. That's why Naruto entered Sage Mode to do so. Madara (his is non-expiring, not limitless) and Obito don't compare chakra wise.
Oh goodness, Orochimaru is more of a sensor type than either Juugo, or Suigetsu, and he acknowledged that lesser thans could fell Naruto's/Kyuub's chakra.
Oh goodness, check his eyes he didn't go into Sage Mode, he went into Rainbow Warrior Jink/Bijuu Fusion Mode
Oh goodness, Juugo can feel NE, but he can't feel the Jyuubi? What Naruto passed combined isn't more than the Jyuubi, but he felt that but not Jyuubs??? Really? Immense.... do you recall when Naruto spent time to check the NE, and Kyuubs said it was useless, he couldn't fathom the sheer amount?
Additionally from the boom, boom, bams that has gone off in the war, freaking entire villages decimated by Jyuubi Bombs, but no ones feeling that... as the ground rumbles underneath they're feet.
Btw did anyone notice how Kyuubs gained said chakra. He was sitting in the same mode as Naruto when drawing NE to go into Sage Mode.