Board Thread:Naruto Discussions/@comment-25531508-20140921150550/@comment-25093611-20140923115530

and this was what made it not into a BS power up + it was limited because kurama was able to take narutos chakra while his chakra was used, like sasukes MS and curse-seal...

that meant that both modes was limited and had risks, but suddenly the timelimit of the sage mode vanished and the danger of kurama because he turned into narutos BFF, to make matters worse, both modes fused and enhanced every power of naruto...

i could agree that both had "luck" (authors help) on a equal scale, sasukes EMS and rinnegan and narutos ssj-modes (without side-effects) o_O