I'm willing to agree that this year's team is better, but I think you're overrating Moz and Thompson, not to mention Shump and JR (who, let's remember, were basically dumped by their former team).
It's easy to overrate the players of the present moment when we can look back on that 2007 Cavs team with fresher memories of those players declining and falling out of the league than of how they played at the time.