I've noticed when you give a unit the strength promotion (star icon) it claims to increase strength by 10% - but I note that the display still gives the same unit strength. For instance, an Aztec warrior should start out with a strength of 2.2 instead of the standard 2, because its has an Agressive leader (free strength promotion for melee, gunpowder), but having just finished a game with the Aztecs, all my warriors were listed as str. 2. What gives?