Robin (Fire Emblem) has his magical abilities and he is a decent swordsman, but I would say that he’s a little outmatched against Marth. Marth’s reaction times are superb and he was able to block a hit from Meta Knight. He’s always been known as one of the faster swordsmen and I believe that he would be able to speedblitz Robin. Robin would not be able to block his blows in time. Marth wins.