You will find that the Mk 2 spent more time in service as an AEW rather than as the MR variant (17 years maritime: 20 years as AEW).
I think 8 Sqn with their AEW Shacks only ever mustered 10 constituted
crews at best - whereas there were something like 15 MR Shack
sqns.
To paraphrase someone else, it's not the length that counts, it's the width!