That can be said about any console too. The fact is, people have limited money and time. Some people have to decide which of these devices to get and it makes lot of sense to compare them. Off course they differ, but that is why people need the comparisons. But in the end both machines are handhelds with screen, battery, controls and both are here to play games.

Lets do a car comparison! Imagine someone looking at two different cars, one traditional and the other electrical car. Both are vastly different, but both serve the same. And have lot in common, despite some of its technology is lot of different and the user experience also differs lot. But people still can afford only one car and need comparisons to decide which one. And that is a similar situation with the consoles or handhelds.