Well, for me it actually worked on Prince. I was protective/charismatic. I built barracks and teched straight to archery. I then built about 7-8 archers, giving only Drill promotions. I went for my closest neighbor, who was Washington. His capital wasn't on hill, but his 2nd city was. The 2nd city was just built and was only defended by lone warrior, so I threw 1 archer there and he won his battle. The others continued towards capital, which was defended by 2 Archers. First 2 of my archers died, but the defenders took damage down to 2.1 and 2.0. Next 2 of my archers won and America was no more. So I think with a bit luck archer rush is possible if you plan it from the beginning and go straight for it.