Well, Firaxis could just as well remove the "Next turn" button and replace it with "Win now", if the player selects Gran Colombia, and spare the further hassle. With all that movement, free promotions and damage regains, in player's hands they will be deadly.
In fact, it is not Bolivar, it is Attila x 10, but also with awesome state and production organization. Those units will not just move faster than wind, they will also pillage faster than a swarm of locusts. The Raid card can as well be cemented in place, once slotted. On top of high production they will also get high pillaging yields to buy more locusts. Choking everybody else coupled with accellerated snowballing. Once they start 'liberating' the world, there will be no need for them to stop. It will be interesting to see though what the AI makes of them.
But out of the first two, I definetly find Maya much more interesting from the gameplay point.