Wolf Staff: 53 MD, 14 INT, 19 Morale
Stardust Zenith: 69 MD, 31 INT
Wolf Bliaud: 13 INT, 18 Morale
Allagan Tunic: 29 INT
The switch from PVP ilvl55 body from PVE ilvl90 body has the same stat differential as the switch from PVP ilvl55 weapon / PVE ilvl90 weapon.
However, my suspicion based on some of the testimony around the web is that morale boost on the armor and accessories is worth it, but the huge hit to weapon damage is not worth the nominal increase in morale.
If morale did give a substantial boost, the morale bonus on the PVP weapon probably would have been much larger in comparison to the morale bonuses on PVP armor. If that were the case, people in full PVP ilvl55 would have been completely steamrolling over full PVE ilvl90, which doesn't seem to be what is going on.