One is a phone charger, the second is a power bank, the third is a charger for 2 laptops, the fourth is a spacecraft navigation system. Now, if you'll calculat

One is a phone charger, the second is a power bank, the third is a charger for 2 laptops, the fourth is a spacecraft navigation system. Now, if you'll calculate clock speed per W you'll see that Google charger easly beats the Huawei and the Anker.