Don't you like how that guy in the video rides up that hill. He's on a DR650 (larger bike) that's loaded down riding up a relatively steep rocky trail yet he's sitting down. At first I thought he must be really good rider then I see him hit some of the rocks and realize basically he's just hanging on. That's a great way to ride off the edge of the trail. He's at the mercy of the terrain.
That's an easy hill if you hit it in the right manner.