Your video has shown me why I will never buy a road motorcycle. My manual six-speed 2007 Mazda 6 does that job better than any motorcycle, - and when it does it, I can talk to my wife and listen to music.
In any case the video was not a fair and unbiased comparison of the two bikes. When the Norton was being ridden, the rider was giving it a squirt, then backing-off. When riding the BMW, the rider's approach was much smoother.
We are all conditioned to think in certain ways. If I was riding the Norton and had that road in front of me, I would probably fang the bike. Then I might come around a bend and find a farmer with a tractor and trailer across the road - either that or the cops would be there,
The BMW would be a much saner ride - but who really needs that.
The only BMW I ever rode, was an R69S and I rode it at high speed down a runway on an airfield. I did not like it much - it had leading-link forks and as I braked the front did not go down, so the trail did not change in the right way. On a normal bike, as you brake the trail decreases and the bike becomes more stable and has a tendency to undersrteer if the effect is too great.
I will say this, there is a really big difference in the sense of excitement between those two bikes.
I enjoyed watching the video - thanks for your effort