Water consumtion is like the most frequently gamed statistics ever. People will count all the water that falls on the field of grass and call it 'water consumtion for raising cattle'.

Without a proper breakdown into blue water, grey water and green water this number is not even worth discussing.

As far as I understand, water is not a sparse resource in Denmark (but might be an expensive one)

Denmarks only source of fresh water comes from their ground water. They do not have water shortage, but still.

Actually more than 14x. Because you control the environment you can provide them with ideal conditions which should speed up the growth cycle.