1. The quote doesn't isn't just talking about growing wiser, its talking about them as swordsman, so to say they "weren't more capable duelists" is bs. Maul specifically being at his physical best(which I'd love to see the actual quote for) wouldn't at all change that overall maul is superior as feloni's statement refers to maul as a swordsman, not specifically maul's "experience" or hsving "learned more"
2.Maul being emotionally inferior, and less able to control his emotions makes him a worse fighter, Just as kenobi being able to control himself and outanticipate maul makes him the better fighter. The quote is talking about maul as of his emotional state as a swordsman having improved from sod. Him being a "sadder character", past his "glory days" or him being "broken" doesn't mean he hasn't progressed as a duelist as feloni has clearly indicate dthat he indeed has progressed along with kenobi as a swordsman from sod
3.You can keep saying that, it doesn't make it true.