My MP prime is the same as yours, only the hips and knees have ratchets al the other points of articulation does not have any ratcheting. Not sure if this is the same with the Takara version so I can't say if it's a cost cutting move by hasbro, but the ankle needs some ratchets in em coz he's more likely to topple over in certain poses and seems a bit loose already in mine which is annoying.
Wanted AM partner Vanguard, Myclones Dirge, G1 Victory Leo, e-hobby Dark scream ( the black version), e-hobby Magnificus
Parts- AM partner Basher-side guns, G1 Actionmaster Elite Windmill's blades[I][B]