The Swordfish was built for this mission

Would Devastators or Dauntlesses have performed better than Swordfish at Taranto?

Not necessarily. The Swordfish's mature crews, reliability, and purpose-built long-range night-strike role were unusually well matched to Taranto.

Substituting a Devastator or Dauntless on paper does not guarantee a better result. Swordfish crews and maintainers had years of experience with a reliable, familiar airframe, producing high availability and skilled handling. Rear Admiral Lister had worked with the type since commanding Glorious in the mid-1930s, so senior leadership understood its practical limits. The aircraft had been specified for long-range attacks on enemy fleets at night, in harbour or at sea, whereas the Devastator was optimized for daylight work. Taranto matched the Swordfish's design, weapon system, training, and command experience unusually well.