Debie:
LGB used to have an illustration at the beginning of their catalogs that compared other scales such as O, HO and N to LGB, but I don't recall ever seeing one comparing various scales that run on gauge 1 (45mm) track.
track
This would be a very difficult illustration to prepare as there are not any engines that are common to all the four, five, or 6 scales common to "G" gauge track (depending on your definition of common). Someone would have to take a picture of an engine and then rescale it to each of the common scales: 1:13, 1.20.5, 1:22.5, 1:24, 1:29, 1:32, and ?.
Chuck N
PS Scott: How was the Christmas party. did you get any good ideas?