When you ask a question be sure you follow the basic rules;
- Use correct grammar and make sure the reader can understand what you want answered.
There is no best sword, there is no best weapon, no best armor. In RPG's, stats are often scaled based on a combined collection of talents, skills, personal skill, experience, level, modified stats etc.
So to answer the question, there is no best sword, as it clearly depends on other equipment, and your talent build.
lie the best weapon for any character is the sword made form meteor ore from the wardens keep dlc