My theory on cupcakes... they are just a frosting delivery system. They are more popular than cake due to the frosting to cake ratio. However, I still believe the cake part should have good texture and flavor.
I had a German Chocolate and Strawberry cupcake yesterday. The german chocolate frosting was the 2nd best I've had, but the cake was really dull and didn't really pair very well with the frosting. The strawberry cupcake frosting was pretty good, but not spectacular, but the cake part, while texture perfect, had very little flavor of it's own.
Ok, just had to bump them up to 4 stars. I just had a smore cupcake. wow. That is a really good cupcake. Marshmallow frosting on a chocolate cupcake with a graham cracker crust and a chocolate ganache filling.