But that's not to say that there's nothing to separate the two: The Nikon D7200 is going to give you a lot more camera for your money if you're a sports shooter, or even just like to snap family ...
Take a look at the Nikon D7100 and D7200 side-by-side, and bar the name badge, they appear near-identical. Body size and weight is unchanged from the earlier camera, and so too is the control layout.