It's also half the price... and even less than that is a sigma/tamron option.
and if you're going to spend that much, get the 16-35L f2.8 OR the 17-40L f4. Both are sharper with less distortion.. cheaper in good used condition AND have the ability to use it on Full frame cameras when the potential upgrade happens - of which the Nikkor 17-55 is useless for.
He was talking about video and photography. And yeah, having the iso boost from the extra megapixels and the better audio functions is nice (that being said, they both suck at 12,500 and above), but I use a Zoom H4N as well as a Tascam DR40 - which are both far better for controlling your audio in the field than anything built into the camera because you can MONITOR your audio, rather than playing it completely blind.
If the D5200 had an audio out jack to monitor your sound, then that changes the whole game, but it doesn't, so it's audio still can't do more than any camcorder with onboard audio, or any setup with an independent field recorder.
Have a nice day, Bluename.