Melli; I lived in the Adirondacks for years and had to remove many pine roots, now I live in the TN mountains and most of what I need to remove has been oak. By far the pine roots were much worse(comparable size trees) like the one you pictured. Soil boulders/rocks etc... have a lot to do with it, but the ball system in my opinion is still easier to work with. I had an old hemlock I had to remove once with a 20+ton machine(Adirondacks) made that machine lift off the ground and it still couldn't lift the root out of the ground. What I have found to make the job much easier especially for the smaller machine is to leave the tree attached, use the tree to the machines advantage.