Ok, I got the full picture now (ah, ah...).
The original filming is 4:3. Period. There is *no way* to convert it into a 16:9 film, without either chopping the picture on top or bottom, or resizing it with a rather strange deformation effect.
The difference between the DVD and the BR is that HD movies -BR- HAVE TO BE 16:9. So, the image you get a actually a 16:9 one, which is "hardcoded" that way and has been made by putting the 4:3 image into the larger 16:9 window. Hence, no matter how you play with your TV settings, you can't make it look 16:9 - simply because your system ALREADY SEES IT AS a 16:9 picture !
On the contrary, the DVD sends a real 4:3 video signal, which can then be, depending on your mood or your TV settings, displayed in 4:3 or "upgraded" to 16:9, either by chopping ("wide 4:3") or by resizing ("wide"). But keep in mind that either way, it won't be as good, sharp and/or complete in 16:9 as it is in 4:3.
It is, and always has been since the original shot in 1983, a 4:3 movie. period. nothing will change that...
I stick with the BR, then.