Board Thread:Versus Debates/@comment-46441687-20200805182809/@comment-9782468-20200819193155

Tyhandles11 wrote: he had kurama to help him enter and he wasnt in it for long nothing suggest he has highrt chakra than ay who was comparable to a biju He didn't need Kurama obviously. Otherwise he wouldn't even know Sage Mode at all.

Fukusaka himself said you need enormous reserves to even attempt Sage Mode. Minato mastered the balancing of energies for Sage Mode before he had Kurama in him. So Minato has enormous reserves of chakra.