I went ahead and tried simulating what if the map was fair (enough) for all of them and autoplayed it 10 times.
1)
Justinian Space victory
De Gaulle Runner up
Ragnar First to die
2)
Justinian Space victory
De Gaulle Runner up
Alexander First to die
3)
Alexander Domination victory
Ragnar Runner up
Zara Yaqob First to die
4)
De Gaulle Domination victory
Ragnar Runner up
Victoria First to die
5)
Justinian Domination victory
Alexander Runner up
Victoria First to die
6)
Justinian Domination victory
Alexander Runner up
Ragnar First to die
7)
Zara Yaqob Domination victory
Justinian Runner up
Alexander First to die
8)
Justinian Domination victory
Ragnar Runner up
De Gaulle First to die
9)
Zara Yaqob Space victory
Justinian Runner up
Alexander First to die
10)
Ragnar Domination victory
De Gaulle Runner up
Victoria First to die
Based on place finish points that gave me
1)Justinian 29 points (5 victory,2 runner up)
2)De Gaulle 11 points (1 victory,3 runner up)
2)Ragnar 11 points (1 victory,3 runner up)
4)Zara Yaqob 10 points (2 victory)
5)Alexander 9 points (1 victory,2 runner up)
6)Victoria 0 points