While I agree without a doubt kushina has a stronger life force than her son, hogoromo saying potential in that instance could have meant anything. Minato for example doesn't have a better physiology than naruto seeing as naruto has bigger reserves of chakra, life force and a stronger body. The 'potential' hogoromo was speaking of could have meant anything e.g ninjutsu skills.He inherited some of her chakra, but as Hagoromo says he didn't inherit their "whole" potential as evidence by Kushina staying conscious when Kurama was ripped from her but Naruto unconscious and his heart not beating.
Also I was responding to the OP who said naruto inherited nothing from his parents which is clearly wrong.