I got the chance to take a couple rides on a jitsu. I don't know if it was the production model or not. But it was very simular to my projectX. I have never paddled a 04 super star, but I don't think it would "get on the wave" any easier than a regular star, which I have paddled a bunch. IMO, the diffenece is once your on the wave. Like the px, it just about auto spins and airs. So, yes to the release, loosness, and carving over the old star. Now if you want to talk new rock star then thats a different story. I really liked the jitsu but not enough to leave the one I have.
"Getting on the wave" is about using current to your advantage. Each wave has its own challenges. Good Luck out there.
Bound is boatless man