Why Italy would struggle to recover from a larger Taranto raid

Would failing to destroy fuel storage make a larger Taranto raid as strategically incomplete as Pearl Harbor?

No: Italy could not repair and replace heavily damaged capital ships on the American scale, so the same kind of harbor losses would suppress its fleet much longer.

The comparison turns on recovery capacity rather than whether fuel storage is attacked. The United States could raise, repair, and replace major ships after Pearl Harbor, while Italy had much less industrial depth and limited capacity to restore several heavily damaged battleships at once. A much larger Taranto strike could leave only a small fraction of the Regia Marina immediately available while newer ships remained incomplete. That temporary collapse would give British surface forces months to attack Axis supply routes and could turn a tactical raid into strategic control of the Mediterranean.