The S5 is better for many reasons. First of all, the iPhone 5S's A7 chip has only 1 GB 9 of RAM compared to the S5's 2 GB. Also, the S5 has expandable storage with micro SD cards. With the iPhone, however much you buy, you have. Also, the back and front cameras are better quality than on the iPhone.
I have failed at finding information to counter this statement or to make a one. Thus meaning that I am forced to surrender this debate. Congratulations Ajayajayaj for selecting the better phone and knowing you would win...
But I am still a great IPhone supporter and will always be.
Well, if you want you can join in the debate. The S5 also has more features. It has an Ultra-Power saving mode. This means that when you are running low on battery this will kick in and it will last a lot longer. It is also dust and water resistant. That means that rain won't hurt it. It also has a great health app called S Health and a heart rate sensor. It also has great auto focus and other camera tools.