One internet site metioned that the yuan swords would break when facing the samurai im guessing this is based on the hype of uber katana.
In the battles the mamelukes didnt win because superior armament but through poor tactical decisions by the mongolian generals, one mameluke mentioned that when 7000 mongols faced his 10,000 he thought they would win easily but the mongols struck so much terror into from devastating archery.Homs was a battle which should have been won by mongols but there commanmder was hurt by assasin and left wing of mongols was undisciplined far from the originol mongol army wwhich would never have done that