I may have to agree with something weird going on in the room or possibly a bad reading; or as I said Audyssey is off. There is no way the M2 can output 60hz and the M22s only 120. I would be inclined to set everything at 80hz and then adjust each speaker to see which setting gives you the best sound and go with your ears at first, not the graphing, that can just drive you nuts. Once it sounds good then take a peak at the graph and go from there.
Maybe try to set the the M22s in the M2s spot and vice versa and then re-run Audyssey to see what it gives for settings.
