The "Silk Edge Sword" and "Leaping Sword" are items or concepts that do not exist in the real world. Without specific information about their characteristics, attributes, or context, it is difficult to compare their qualities or determine which one is better.

If you are referring to items from a specific video game, book, or other fictional universe, please provide more details about the attributes, abilities, or context of these swords so that a more specific comparison can be made.