Come on. That is just ridiculous. You haven't given me a shot, you have given me a situation. I can shoot anything with a D40 or a F3 that you can with a D3X. And I mean a photograph. A portrait, wedding, product, architecture, etc.
No, it is not ridiculous. yes you can shoot with the same camera, approximately the same frame, but it will not yield the same results. These results will depend on the camera, the sensor, the lens, the settings, and the processing.
I have given a situation and an example of a shot. Ok, bride walking down the aisle, moving at all. boom, that 2 second shot results in a very blurry image. bride and groom kissing at the front of the church, even this much movement at 2 seconds of shutter speed is not doable. If you really want to test it, then do so. Take a picture of somebody walking at 2 second shutter speed, and then take a picture of them walking at 1/50th of a second.
Tons of photographs have been taken, since cameras have been invented. at the same time styles have changed as technology has advanced. In the past shots that were not possible to take well, were often just not taken, because people knew enough not to waste their film. They posed their images around the limitations of their equipment. As those limitations erode we are able to explore some of those options not done in the past.
Finally you can
A good person to message for comparison shots is Tsalreski (I think that's the spelling of his name on here) he has given examples in the past of images that can not be duplicated with lesser equipment.