What would you score each Final Fantasy game in the 1 to 5 scale?

[Opa-Opa]

FF - 2
FF II - 3
FF III - 3
FF IV - 5
FF V - 3
FF VI - 5
FF VII - 4
FF VIII - 3
FF IX - 5
FF X - 3
FF XI - ?
FF XII - 3
FF XIII - ?

Average score of the FFs I've played: 3.25
My "perfect" score FFs: IV, VI, IX