Board Thread:Naruto Discussions/@comment-26800188-20150721182335/@comment-26665178-20150809161036

boruto is only 25% uzumaki anyway, 25% uzumaki, 25% namikaze, 50% hyuga(which has hamura DNA in it(hence otsutuski). So consitering he only has 25% uzumaki DNA anyway, and he had a chidori in the other hand, its no wonder its not as big as naruto's

Edit: Also chidori takes constant chakra to maintain so he was prob saving alot/some so he could constantly supply it.