I've now watched it from Credicor and Ecoline's perspectives.
Notes:
1) I did not see any point in the game where Credicor was ahead. Maybe it just was no in the cards. The consensus is that Credicor made errors.
2) Ecoline made some errors too. Maybe Ecoline could have prevented some plant loss (Ecoline lost 14 plants). Ecoline did have protected habitats but discarded it.
3) UNMI was 5 credits short of ending the game on gen 8 with a win. Every credit matters. I have not yet watched it from UNMI perspective to see whether it wasted 5 credits on gen 8. I do not know whether security fleet was paid for or came as a free card. It was played using titanium only. Still, playing the card wasted a credit rather than selling it. The one point would not have mattered.
4) Ecoline had a bad starting hand. Drawing two great space events did help a lot. But the three cards drawn from the other prelude were trash. Basically that prelude was nearly worthless.
5) Gen 2, Ecoline receives Kelp farming from UNMI ( ! ), but passed it to keep Earth Office. Debatable choice.
6) Gen 4, Ecoline received insects. I really try not to pass that card, but in a short 3-player game it's not overwhelming. I think Ecoline got 2 plant production out of it. Worth buying and playing? Yes. I do not know which two cards UMI kept to pass Kelp and insects.
7) Gen 5 Ecoline received Crucial protected Valley from Credicor. That's a disaster. Ecoline did not have a 3rd plant tag for Nitrogen-Rich asteroid, which everyone knew Ecoline had (from the prelude).
8) Gen 6 Ecoline receives towing a comet from UNMI. Does not keep it (wise choice - the oxygen was going to be completed anyway, and the titanium and cash were needed for nitrogen-rich.)
9) Ecoline was able to use Mars University early on to get Space hotels. A bit of a lucky draw, but Space hotels at that point isn't exactly game-breaking.
10) Gen 8, Ecoline receives Research from UNMI. Debatable sequence here. If UNMI keeps it, UNMI can win the scientist award. But Ecocline would receive second place. Probably not a good play. Ecoline bought and played it for 14 credits to receive 4 cards (because of Mars Uni) and a VP. Seems reasonable, and perhaps was angling for scientist.
11) UNMI got great value out of electro-catapult. Unsure about AI central. The three cities (All were SP, right?) cost 73 credits and mayor cost 8. That's 14 points for 81 credits, and the income from the +1's from the cities. Not a bad deal. And it left UNMI with a shot at 2nd place landlord, though it did not pan out.
I cannot say that Ecoline got especially lucky. I mean, pas Mars University at your own risk. Ecoline received some really good cards from it to replace some very bad cards. And a valuable science tag, though it ended up not mattering.
Scientist was too close to call, so, wisely, neither player funded it. It would have been a tie, which would have been a waste of 20 credits.
Miner was also razor thin, so, same thing. Ecoline could have funded banker, but UNMI still had 2 cards, and some dangerous banker cards were still out there. Cartel, Miranda, Zeppelins, medical lab. Though I am not sure there was a possibility that UNMI could have afforded to play any of those cards if it held any of them. Ecoline had discarded hackers so that was a non-issue.
So, with no clear award to fund, Ecoline spent 23 credits on a SP greenery worth 2 points. And Eco Zone for 1 point. Those two plays combined resulted in an extra greenery from placement bonuses, worth an extra 2 points. So, that was 33 credits for 5 points. Very reasonable at that stage of the game.
Ecoline waited until it was clear that thermalist was going to be worth zero points, and then used heat to end the game. Good move. Ecoline could have played Optimal Aerobraking one gen earlier, before Nitrogen-rich, but it would have meant using Media Archives several events earlier. That's basically a wash, since the extra 3 heat would not have mattered. Except, maybe it would have. Maybe with that extra 3 heat, Ecoline could just end it with a SP asteroid instead of Eco-Zone and swiped points for Thermalist. I would need to check one more time.
Ecoline actually had import of avvanced GHG in the same draft as Optimal aerobraking. Thermalist is very dangerous to fund on such narrow margins with the hazard of optimal aerobraking out there and several known space events. And Ecoline had Earth office too, making GHG a very cheap card. And it would have added an event to Media Archives.
Further review - Ecoline could not have funded banker. There was no way UNMI could afford two of the cards necessary to win it, but Cartel would have tied it. Cartel AND Robotic workforce (on Tropical Resort) could have swiped Banker from Ecoline, had Ecoline funded it, but at the expense of Not playing Plantation, and giving up 3 points for Thermalist. Overall, that's a bad sequence for Ecoline - but, if I am Ecoline, and the UNMI player has 15 credits and 2 cards, I'm funding banker. If those two cards happen to be Cartel and Robotic Workforce, oh well. I mean, Cartel would have been played already most of the time, unless it was a gen 9 Draw from AI central. The play would be 3 fewer credits spent for one more point.