This is a fair point. I suppose what I was getting at is the difference in how explicitly the games telegraph their determinism.
I'm not familiar with the MST speedrun. (What's MST?) In general I haven't spent much time watching videos of playthroughs and things like that.
http://www.twitch.tv/cosmowright/b/304071259 WR
http://www.justin.tv/speeddemosarchivesda/b/304851855 lower quality stream but the glitches are explained. I recommend this version. Starts at ~40 min mark. It's a really fun watch.
MST: Medallions, Stones, Trials (All Dungeons)