NW-2 Switcher Traditional line vs. Golden Memories

WHat the difference in these two lines as far as the NW-2 switcher that  is shown in each line.  Are they the same scale and level of detail etcc?

ALso does anyone know if the ones shown in the 2008 catalog have been shipped to distributors/retailers?

Thank
Eric

Is there a shipping schedule for Williams Trains posted.  Trying to find out about a couple of items in 2008 catalog.

Thanks.