Why a sloop could be a prestigious anti-submarine command

Was command of a sloop more prestigious than command of a frigate?

Not automatically, but sloops were elite ASW ships with strong records and often offered broader independent and diplomatic responsibility.

A sloop was not automatically more prestigious than a frigate. Its strong anti-submarine record and place among the Navy's leading ASW ships made command professionally important. Sloop captains could also receive independent and diplomatic work that broadened the appointment beyond convoy escort. Prestige came from the duties and record of the ship rather than the label alone.