This I all know, but two things. First being, when I originally typed CPU bound his profile still said Athlon X4 640 and second being the Kaveri 7850k is a Streamroller 2 module design which in most cases is slower than its native quad core A10 6800k and 5800k brothers (single thread loads)....which are pretty slow themselves. In a lot of cases it's slower than even an IB i3. That being said, just by looking at this GPU usage despite his resolution he's still CPU bound. If you're not pushing 99% on a graphically demanding game you're CPU bound.
Another way to look at it is, what I'm seeing is the 7850k typically scores lower than even the FX4300 which is rather slow in itself. We're looking at Celeron/Pentium IB/Haswell chip performance. Able to get the job done, but won't do a good card justice at 100%.
As to the card, yea Best Buy's site is utter crap. You look everywhere they type it says 260, but the model number and box says 260x. I simply looked at the name on top and assumed, so that's my bad. It should walk all over the 460se, but he's still CPU bound unless he plays a Mantle accelerated game.
To your last paragraph, yea I pretty much say that a lot in my stickied thread and everywhere else.
If I would have known gaming would have went the way it did I wouldn't have sold my 955BE and poured money into my platform the way I did. ****, if I didn't get this 3960x for free I would still happily be using a 2500k at stock