PIE!!!! the taste and consistency is so much better. cake is to fluffy for my taste although i will still eat it. I think it's better for you because it has actual food in it like apples, cherry, etc.
Cake has more room allowed for sweets, such as frosting or candy. while in pie, most of the sweetness is generated from the filling. cake is sweet in every detail. therefore, cake is better for a sweet lover.