I see the Crux as a modern heavy oil ball. Not too long ago, heavy oil meant the ball dug in the second it hit the lane, providing traction/stability, but sacrificing backend movement/entry angle. The Crux isn't like that; the Crux pushes through the front fairly easily, and then the teeth are shown in the midlane and through to the back end. Once the Crux digs in, it's going to keep on hooking as long as it finds oil to keep it from flaming out. It's the difference between strength and hook. Most strong balls were all about digging in. The Crux is about hook and allowing you to maintain it. That's why you see it getting use on house shots; it doesn't burn up instantly. As such, if the Crux was rated as being somewhat weak, my thinking is that they based it upon the fact that the ball doesn't start up early like the traditional oilers do. Still, make no mistake; there is nothing weak about the Crux!