
I'm bored-@-work, too

...
Ratios --- what you have to "master" (

) is how everything works togther... Quechas are 2 Str, +100% vs. archers, = Strength 4 ... Archers are Str 3, but they get +50% in city defense naturally, = Strength 4.5 ... Uh-oh... those odds aren't on your side

....OK, so you said you had 3 archers left in that city, all down to ~1 Strength? That means you needed 3 more Quechas

... Your job as Supreme Military Commander is to OVERplan... so, 3 more quechas, or barracks quechas, were necessary in these fights (remember, if you DON'T finish off those 3 guys, they're only going to earn promotions and get tougher

) At the early stage of the game, when the Quecha rush is best, they're all you have to rush with, though...
*I* don't bother taking workers until I capture the city
Countering, Pt. 1 -- The counter is a barracks and more Archers or Warriors (Archers b/c they get City Defense with their upgrades, Warriors b/c Quechas don't get a bonus vs. them

)
Countering, Pt. 2 -- Walls make it very tough for Quechas to beat defending Archers, too... but, as I said above, BARRACKS will be game over.
The Quecha rush is the EARLIEST rush --- which means it also ENDS the earliest...."Caveat Rusher"