So faster, heavier, more powerful, but the comparison isnt useful?

Just so we are clear, I don't have any air in my tire. No tubes, no messy sealant, no tubeless. It's a foam core. It can't go flat, and you get traction for days. It's not cush core, or any of the alternatives, which is where I think they went wrong, because those all still require air. Air is one of the biggest, if not the biggest failure on a mountain bike. They don't weight all that much either, I'd take an extra few ounces of rotating weight vs futzing with air trailside.