I thought that transmissions for MB diesels were different than Gas engines?

[jmbeam]

I thought that transmissions for MB diesels were different than Gas engines? People always said that the gear ratios were different because the diesel had so much more torque.

Then why does the 1997 E30D have the same transmission as a 1997, 1998,1999, C230 gas vehicle? They both have the 722.600 transmission.