Knowing how pragmatic McIntosh can be, I would say they figured if you didn't know whether to get a 6900 or a 2275, you probabaly don't know the difference between 200W and 75W either. As Josep said above, you can't use the 2275 for just any speaker/room like you can the 6900. Saying you should get the 6900 is the more versatile answer and least likely to cause tubes to get cooked by someone who didn't realize what they were getting into.
