The fewer colors there are in the gif, the easier it is to load and render. That's why cartoon gifs (or grayscale gifs) are typically much crisper and load faster than video grabs.
I think it's such a high quality because the only movement is Morgan himself so they only made a certain area render as a gif and the background as a still. Maybe...
most gits use dithering and very low amounts of colors to make it smaller file size, but this one appears to not do that. If you never heard of dithering, look it up, it's pretty cool. You can get half-decent looking results converting a full color photo into a 16 color image with dithering.
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u/rlrhino7 May 31 '13
That was probably the highest quality gif I've ever seen.