Would the Royal Navy have been better served by receiving 326 additional Blackburn Skuas instead of 136 Rocs?
Short answerYes; the Skua was a capable dive bomber for 1939 and would have provided more useful combat aircraft than the Roc.
NotesThe answer is brief but operationally clear. More Skuas would expand a role the Fleet Air Arm could actually employ at the outbreak of war, while the Roc's turret-fighter concept offered much less value. The comparison shows how fleet numbers can conceal large differences in useful capability.