Let's not forget that all these numbers are referring to on/off contrast. The more relevant number is ANSI contrast. If you put a 2008 Panasonic next to a 2007 Kuro on blank inputs, you'd be hard pressed to see much of a difference. But turn the TVs on and start watching stuff and the Kuro will look noticeably more "inky". That's because of the exceptional ANSI contrast that not a lot of people talk about. It's able to hold on to it's minimum black level a lot better than a Panasonic.
On/off contrast doesn't necessarily imply a good ANSI contrast, or vice versa. For example, CRT is still the on/off contrast champion (if Pioneer hasn't beaten it by now), but plasma has had a much better ANSI since day one.