Board Thread:Versus Debates/@comment-27202380-20151125000104/@comment-734582-20151127185914

BakumatsuWarrior wrote: But somehow the common Ashura chakra in Hashi and Naruto, and the common Indra chakra in Madara and Sasuke flew right over Madara and Tobirama's heads. Makes perfect sense -_- Isn't that evidence in itself that you're wrong and that the chakra signature is not equal? Note that pairs of Transmigrants can easily detect eachother (in Boruto, Sasuke can sense naruto on another world). So i think that itself proves the signatures are not similar enough.

Secondly, chakra is often described as colored. Sasuke's own chakra color changed significantly as he awoke Susanoo. Naruto's chakra is likely heavily colored by the presence of Kurama, while Sasuke was both experimented upon by Orochimaru and possibly changed due to his hatred. It could be that Naruto and Sasuke -due to circumstances- are the exception to the rule.