I just did a little more investigation into these different DVD versions, aspect ratios, etc. And I was a little hasty in deeming the 16x9 transfer to not be a tilt'n'scan but rather a center cut. After some comparisons, I can see that indeed, at least in the early going of the film, they did do some tilting. After Scrooge issues his first "Humbug", he goes outside the London Exchange. The next scene is him coming out the door onto the steps of the London Exchange where he's met by Samuel Wilkins, the man who can't repay his loan. At the fade between the two scenes, we can see that the prior scene was tilted upwards a bit to include the heads of the gentlemen talking (though Scrooge's hat is still cut off a bit). As it transitions to outside, the frame is a bit high and we can't see most of the snowy steps of the Exchange. As Scrooge approaches, the scene tilts down to reveal more of the steps and less of the high arch of the doorway.
I'm going to do a little DVD-Beaver-style comparison here with three examples of the same frame.
This is Nephew Fred entering his Uncle Ebenezer's office in the VCI Ultimate Edition DVD, 4x3 version, 2007.
Nephew Fred enters Uncle Ebenezer's office in the VCI Ultimate Edition DVD, 16x9 version, 2007. Notice his head is chopped off as he bounces upward out of the frame, and that the chest-like object at the foot of the shelves has all but disappeared.
Nephew Fred enters Uncle Ebenezer's office in the VCI Blu-Ray/DVD Combo, DVD version, 16x9 framing of a 4x3 picture (black bars are part of the image), 2011.
The image on this latter DVD came out VERY dark in my screen capture, but the improved clarity can be compared by looking at the candle.
The actual Blu-Ray, which I cannot capture on the computer, looks even better and sharper.