Luck! Of course. Sometimes good luck give you instant win too! I just have a game with Alex in these 2 days where I got Almanac,
I forecast pencil(with a bonus of 4),
score it and forecast an age 5 card Stove(with a bonus of 6),
score it and forecast an age 7 card Jeans(with a bonus of
,
score it and forecast an age 9 card called wristwatch(with a bonus of 10), and what, I score it and the game ends!
But no, I don't need good luck. I would say I don't want bad luck in the bottom line, but games wins by luck is not solid and turns the game into a gamble. Yea there are times that you are in age 9 or 10 which you know you are gambling(say if I cannot seal the game in this software try I would lose to an achievement run or something). But usually that is the last resort. If you can win by other approaches why going for lucky draw...
And talking about icons. I counted the games that I have won recently(I think I lose 1 out of 4-5 in the recent 50 games). In some 60% of the games that I won, I have less overall icons than my opponent. I lose in every category of icons quite a lot of these games too.
The key is, to win the game even you have less icons than your opponent. Sharing effects doesn't means you cannot benefit from it anymore, instead you may earn even more from it. Get yourself prepared to be demanded of something before it happens. 1st Tier players seldom get hit by gunpowder more than 3 times in a game, because they foresee its presence and they have a plan with it before entering age 4. Same thing as Machinery or Combustion or Mobility or anything similar. There are very few cases that someone seal off their opponent via super boards and icon superiority, far less than an achievement case.