Writing Fiction: Are specific descriptions better?

Not long ago, I was critiquing a short story and came across a passage like this:

The gravel parking lot had six spaces. Two were filled by Ford F-150 pickup trucks, and the rest were empty. There was a convenience store on the west side of the lot with printer-paper signs in the window. The signs were written in black marker and read, “50% off your second $2.99 donut,” “$0.99 black coffee,” and “Bathroom for customers.” Detective Walker gazed into the twenty-three pine trees clumped together at the north edge of the parking lot that formed the…