This and Hashi's chakra a bit different from others.........He was blessed with most pwrful chakra among the senju.......Senju Clan = The clan with a thousand skills
That is the translation, meaning mokuton is just one of those thousands of techniques..each senju had their own ability unique to them..it's like Obito's kamui, it's a technique via sharingan but not every sharingan user has it
just like mokuton