This is true, but the 96GT is still stronger than HD3000.
The problem is, the only GPU with hardware decoding to deal with H.265 is the GTX960. So at this point in time the GPU can't really help much anyway (and even if you could get the gpu to decode using pixel shaders, see above). Your CPU will be decoding in software mode and from what I've seen, it isn't up to the task.
I'm basing this assumption on the link that shows the i3 in the OP to be roughly equal in performance to the 6000+
Yeah, but .265 could be a while away from mainstream adoption. It will probably only really takeoff when the hardware support is there.
For now, most things will still use .264, and I believe most modern GPUs (even those in Android devices) have fixed function support for decoding it.