The perceived superiority of a double-bladed lightsaber, also known as a "saberstaff" or "staff lightsaber," is subjective and depends on individual preferences, combat style, and fictional context. In the Star Wars universe, double-bladed lightsabers have been depicted as formidable weapons, but it's important to note that lightsabers themselves are fictional and not subject to real-world comparisons.

Here are some aspects to consider when discussing the double-bladed lightsaber:

1. Reach and Versatility: One advantage of a double-bladed lightsaber is its extended reach. With a longer blade on each end, it can cover a larger area and potentially strike multiple opponents simultaneously. The longer reach can also be advantageous in defensive maneuvers, keeping adversaries at a distance.
2. Defensive Capabilities: A double-bladed lightsaber can provide enhanced defensive capabilities by utilizing both ends of the weapon to block or parry attacks from different directions. It allows for a broader coverage area and can make it more challenging for opponents to find openings in the defense.
3. Maneuverability: While the double-bladed lightsaber offers extended reach, it may be more cumbersome and less maneuverable compared to a single-bladed lightsaber. The longer length and additional weight of the staff can affect agility and speed during combat.
4. Skill and Training: Effectiveness with any lightsaber, whether single or double-bladed, relies on the skill and training of the wielder. A highly skilled practitioner can maximize the advantages of their chosen weapon and adapt their combat style accordingly.

It's important to remember that lightsabers are fictional weapons created for storytelling purposes in the Star Wars universe. The superiority or effectiveness of a double-bladed lightsaber is subjective within that fictional context. Ultimately, personal preference, combat style, and the fictional narrative will influence whether a double-bladed lightsaber is considered "better" or more suitable for a particular character or scenario.