I did this descent in my truck once the day before doing it on the V20 in a 200 miler several years back so I had an idea of what to expect. last year I did it on the DF and smashed the KOM by over 30 seconds and improved my time by 46 seconds or 11%, which is impressive when you consider I hadn't seen the road in 3 years. The road is bumpy, very blind, and only a single lane with the chance of weekend campers on the road, these all give the advantage to the DF over the V20. I'll be doing the same event this weekend and was considering mounting the Gopro just for that descent since it's the highlight on the day.
Another thing to consider when comparing my video's or descents in general is I'm always holding back just in case I have to avoid a sudden car coming up, that makes a big difference.
https://www.strava.com/segments/796143
The analysis presented shows about 11 mph average speed difference on a bent.
You did around 28 mph on the DF.
Do you think you could possibly average 39 mph over the whole descent on a bent?
Your cornering speeds were lower compared to the #2 guy but your straight away speeds were higher.
Here is the funny thing about the math. If you go 10% slower on half the course, going 10% faster on the other half does not average out timewise.
If you have a 1o mile climb and it take you one hour to get to the top, how fast do you have to go on the descent to average 20 mph for the whole up and down total. The author fails to understand the very simple point made by this illustration. The answer is the speed of light.