User blog comment:WanderingSkull/Invisible Ties: Robin (Fire Emblem) vs. Kirito (Sword Art Online)/@comment-4661256-20160411014705

El Alamein's "I Don't Know Anything About Either Warrior" Edges:

 Swords: Levin Sword & Mystletainn vs. Elucidator & Dark Repulser:  While Kirito's skill with his swords means that he can dual-wield his weapons effectively, there's nothing particularly special about them (except for the fact that an obsidian sword is insanely stupid because obsidian is brittle as hell, but whatever, because... you know, anime). Mystletainn has an increased damage output, meanwhile, and the Levin Sword is a straight-up electrically-charged ranged weapon. As Cfp mentioned below, steel > obsidian. For these reasons, Robin takes a decisive edge.

Edge: Robin

 Equipment: Thoron vs. Stick Shuriken:  This is a ridiculously huge edge for Robin. Kirito's ranged game is very weak, and these little shurikens will be little more than afterthoughts--heck, even if Robin's ranged weapon was just the Levin Sword's electric attacks, the shurikens would still lose. But Thoron's a massively overpowered electricity spell with a greater damage output and much higher blast radius (considering the shurikens don't have one to begin with) make it by far the superior choice.

Edge: Robin

 Armor: Grandmaster Armor vs. Blackwyrm Coat:  Again, Robin seems to have an obvious edge in this category. The Grandmaster Armor's magical steel is superior to the Blackwyrm Coat's magical leather, and it doesn't even hinder Robin in his movements, which means he'll be not only well-protected, but he'll still be able to maintain a level of agility and mobility that such plate armor would normally restrict. Also, Elgb implied below that the Blackwyrm Coat wasn't very durable (as Kirito lost limbs while wearing it), so ... yeah. Grandmaster Armor wins.

Edge: Robin

 Skills:  A lot of Robin's abilities seem to be either defensive abilities or enhancement abilities, which is good for holding off potential damage from Kirito and maintaining stamina and damage over the course of a prolonged battle. Kirito's Battle Healing, alternately, will enable him to shrug off enormous amounts of damage, although, of course, he can be overwhelmed. The rest of Kirito's abilities are just different swordfighting techniques--which are fine, I guess, but they still limit his overall arsenal. In my opinion, Robin's got a strategically superior arsenal of skills, simply because he can continuously increase his attack powers (enabling him to do increasingly larger amounts of damage to Kirito until he overpowers his regeneration), his defensive powers (which, obviously, will block damage), and maintain a level of stamina that can keep him going long after Kirito has tired himself out.

Edge: Robin

WINNER: ROBIN

Yeah, this shouldn't be a surprise. He dominates in weapons, skills, and X-Factors (where Robin wins in X-Factors it's a significant lead, and where he loses it's only by a few points). The Levin Sword is by far the most versatile tool in play, and with Robin constantly charging his abilities it's only going to be deadlier. Kirito might be able to hold his ground for a while thanks to his regeneration abilities, but sooner or later he's going to be overwhelmed. Combine this advantage with Robin's edges in intelligence, combat experience, and training, and you have a more balanced and more combat-capable warrior who will be able to outmaneuver his foe with a more varied and more effective arsenal.