Jim, this looks correct to me based on a second read - had missed the 'more' explanation in the intro paragraph at first. Though agree, the math gets funny using the double and triple language as written.
For clarity, this is where we all stand in terms of assets held:
Manufactorum - none
Power Station – I:1, X:0, C:0
Command Bastion(includes HC): - I:2, X:2, C:1
Spaceport(+ for adj SG) – I:1+, X:0, C:1+
Fuel Depot - none
Hive City - I:2, X:1, C:0