Not completely wrong at all, even if you disagree with the generation length (which is an average after all) the maths is correct. The 0AD thing isn't, but you can't have everything.
The fact both sides of the civil war can be argued for is a great thing: it means that you can choose different justifications for your character to join either side instead of there just being a 'good' option. You're forced to pick the 'best option available' depending on what your character would think; this is an RPG after all.
'is a man not entitled to the seat of his own? "No!" Says the man from the internet, "it belongs in the tip". I rejected that answer; instead, I chose something different. Something impossible. I chose... Rapture.'
BRB, off to write a self help book