It's probably a little early to make quality comparisons that are meaningful at this stage, no offence intended.
None taken at all. All the HEVC are in early development and there probably will be improvements again.
Plus on top of that h265, among the other HEVC's, all have 10bit options and 4:4:4.
On top of that, I'm sure there will be a lossless version as well, much like there was for h264.
But still, in that example, there was some blurring going on, which is one way to decrease size, getting rid of grain and such.