I, for one, do not think the pie stands any sort of a chance until it can be topped with different colored icing, sprinkles, and other like candies.
this (no matter how tasty)
Plus, a pie is big and constrained to one single design. Cupcakes are dainty, small, and one batch can be decorated in a plethora of ways. Clearly, I'm not giving up on the cupcake. What are your thoughts?