ASIC:
-> ASIC is usually designed to support 1 mining algorithm (but sometimes up to 3).
-> After the mining of ASIC, it is difficult to sell
-> More energy efficient is so created specifically for the 1-3 algorithm

GPU:
-> GPU can be used for almost all algorithms (that is, you can get a lot more different coins)
-> Easier to sell after mining
-> Less energy efficient


Based on your explanation, i can see that gpu is better to use than ASIC and I also agree with that because with less consumption of energy will save more money thus creating more income.