Regarding Horsemen or Swordsmen, the Horsemen have the additional advantage that because of their speed they can attack more enemy units in open terrain. So, on average, they are facing a weaker opposition.
It is also easier to make a co-ordinated attack on one city and take it before the enemy can move in and/or rush-build additional units. As a consequence, Horsemen will also face less opposing units.
Swordsmen, on the other hand, have a better chance to get as well as survive a counter-attack and thereby receive an automatic promotion.
It is also easier to make a co-ordinated attack on one city and take it before the enemy can move in and/or rush-build additional units. As a consequence, Horsemen will also face less opposing units.
Swordsmen, on the other hand, have a better chance to get as well as survive a counter-attack and thereby receive an automatic promotion.


That I leak info to people in advance to release in the discussion! Or that I see what the long-term strategies suggested in the pre-game discussion are and, and tweak the game map to foil them?



Because in some cases it helps the AI get established faster, and as such allows the player to tag-along.