This is I am saying. If the moon was habitable and having some sea's on it, and if there the tsunami erupt in the sea the devastation may be count on the lower level but as far as tides are concern they could irrupt on great levels, but due to a lesser gravitational pressure on the tides the speed of falling tide can count on the lower level! in all the total things caught in the tides.
The tsunami tide X 1/6 in its weight, so the aggregate weight of the raised tide may minimize and hence the devastation shall be lower in such case.
We know that moon has no sea's, not habitable etc.
I am saying this one "for example".
What corner of thought would you like to give in this case.