It was interesting, making the transition from a 26'er Epic full suspension to the Willits 29'er hard tail.
1. The riding position on the Willits is superior for me. My wrists are weak from crashes, and the taller bar position is much more comfortable. I thought that would have the negative effect of hurting the climbs, but I had no front wheel lifting.
2. Even with 100mm of travel in the front, that big wheel is significant in the technical stuff, especially the rocks. On a downhill I rode yesterday, I easily cleaned it with the Willits, and always had issues with it on the Epic. A few times I thought "here we go", but the front wheel just rolled over the rock. No drama. Interestingly, the XTR brakes are not as good as the Deore IMO.
3. The Willits is scary fast on acceleration, certainly because of the light weight, but also because of the efficient drivetrain and smooth running tires. The Epic is still a better climber on technical climbs.