Kotaku have done the work...Not all televisions are built the same. For kicks, Japanese site Intermezzo compared the Final Fantasy XIII Blu-ray PS3 demo on two televisions (one HD, one analog). Let's have a look.
One of the televisions was a US$200 model 14-inch Sony WEGA from the year 2000. It was connected to the PS3 with composite cables.
The other was a US$4,000 50-inch Pioneer plasma panel from 2006. It was connected to the PS3 with composite cables.
See the full post with images here on Kotaku...