Well that was way too many words and poor wording to essentially just say "the reason I fight better, have more luck, arrive for important battles exactly when I am needed and not before or after, and get all the girls... is because I only fight for myself. While you fight for everyone but yourself, forsaking your ego in the process."
Also really doubt that difference is capable of having that effect, since aside from the first listed effect, the rest is all pure RNG (even that last effect, as most of those came from meeting the girls at crucial moments too)