I wish they would release high-bitrate torrents of things like this, like the few Eurogamer do for comparisons.
Video quality can hide imperfections in poor quality graphics as well as make high quality graphics look comparable to lower quality.
This was all too apparent with the many AC4 videos that made the current-gen and next-gen versions look comparable, when in reality even the difference between 720p and 1080p at the SAME graphical quality is pretty obvious.
I guess its too much to hope that YouTube will keep the same bitrates when using WebM V9 so that we actually see a drastic improvement in picture quality.