I understood the "thought process" behind, it's not about the ice cube or whatever, user seemed to imply that for #1, he cared much more about the details in a way (what's exactly being fed, in what form and so-on) which often leads to just better nutrition.

We know that food isn't equal, and we know that food can change your brain/energy level/memory... both as children and as adults which indirectly affect life outcomes.

Actually, anyone that has started eating properly (lower portions, never be full, always eating useful things) can attest that they are just overall a better person, healthier, fitter, sharper...