Board Thread:Versus Debates/@comment-34277398-20190315034807/@comment-9782468-20190412152918

No, it was already stated that training with Sage Mode can lengthen your time in it. So Minato's SM wasn't short because lack of reserves, it was short because he wasn't good at it, as he stated.

Also, 4th War Minato didn't have more chakra than Hokage. The refills are negligable when it comes to Sage Mode in that instance, because once he creates the necessary Sage Chakra, he can't mold any while he's moving. So even if his regular reserve fills back up, he still has the same limit on his SM. Also, Edo's are weaker than their alive counterparts, Madara vs Hashi and Tobirama respectively prove that.