It is a common misconception that fire sprinklers will cause more damage due to the water that comes out of the sprinkler heads once they are activated. While water is used to diffuse a fire, the main design of a fire sprinkler system is to use as little water as possible in as little of space as possible—controlling a fire in its early stages when less water is needed. Here is a video showing a test of sprinklered vs. not sprinklered: https://www.youtube.com/watch?v=507gj_JWWSs