The new iPhones are here, and Apple says they represent "the biggest advancements" in the line's entire history. The screens are bigger and sharper, yet the phones themselves are both thinner than the previous iPhone 5S. They're way faster than prior models and powerful enough to run games that looked downright stunning on stage. And Apple says the camera inside, despite staying at only 8 megapixels, takes better photos and video than ever before. So yes, it seems these are the best iPhones Apple has ever produced. But how do they stack up against a lineup of also-superb Android and Windows Phone competitors? Let's take a look at the latest battle in the ongoing smartphone war.