There's actually a tremendous amount of pressure when a coin is struck. I'm sure weak strikes happen, but in this case perhaps it is that the die was late stage, worn and at the end of it's life. They used to mistakenly call struck through grease errors as "low pressure strikes".
I will take better images of the coin tomorrow but I believe there are no die scratches on the open fields. Late die stage would show likely polish lines. Top and bottom of the memorial are not complete. Late die stage would not leave both sides so mushy. Maybe excessive grease on both sides? or weak, early strike as they are setting up press?
