That looks like it was filmed in the South Jersey pines. I swore I spotted some pigmy oaks and pine trees! That sugar sand looks so familiar to me as I grew up in the pines. Maybe the hidden lakes area?
It comes close to the 350 XCF Kaliub Russel Editon (that has been mapped as well) I can only state this from riding both bikes back to back. The SXF would be a different story based on throttle body size and a few other differences.
I've ridden up there many times. A very good friend of mine lives in pemberton. I worked in Jersey for nearly 2 years. Rode nearly every enduro they had. Pine Barrons, Curly Fern it's a very different ride. I'm from TN.