Well, maybe you shoot at them from the front. That's like trying to take down a tank with Nerf guns. Shoot them in the back or sides, that will make them take more losses. Interesting thing though, my Kretan archers can take out atleast 20 elite African pikemen from the front. I wonder what's wrong with your guys.
Kretan archers are elite.
An arrow is an arrow, elite just aim better, better casualities rate.
But a non-elite should be able to inflict casualities to any units, pikemen or not.
They are no tank, they are humans, with shields (smaller) and pikes deflecting arrows. A lot of arrows should go through the pikes, and shields don't block a whole volley, so I don't say here that they sould all die at once, but one dead per volley, ten volley and you see where this is going.
That, plus the fact that arrows goes through metal, metal only deflect, it doesn't stop... meaning if the impact is perpendicular, it will go through, if the impact is not, it will probably deflect.
Arrows are so underrated