Removed this heavily biased comment:
However, it is vastly outdated and does not use many of the most efficient routes. The difference in quality is accounted for by many top Doom players' preference for recording tool-assisted runs over regular ones.
The page is old...
...it doesn't mention that 3 version of this run exist: 30uv1448 (the originally released), the 30uv1441 (released shortly after, the most known) and 30uv1437.