Rush : 1. Iroqouis : They don't have to gather coin in colonial to get an army, mostly they can gather food, they have aenna for 100 food which is a good bow unit. They get the travois free, so they don't have to gather for a military building.They have a fast age up, with a free travois to use as a forward warhut. Add to that the warchief aura and their rush at 5 -6 mins with aenna, tomahawk and kanya they can just crush early game. They just easily out mass anyone else early game.
2. Ottoman : The ottomans have the fastest colonial and fortress times, they can be super strong age 2 and have the best age 2 composition in AOE3, the jan-abus combo. They also have a scary fast fortress timing with janissaries,falconets, and mamelukes. This is at 7-8 mins which is pretty unstoppable then and its faster than some civs colonial rush .
Steam & ESO : CelticCrusader
I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.