I would be hesitant to do that to a basement. I had to tear out that same work at my current home because somebody installed it because the basement was dry. Turned out it just hadn't rained that hard or for an extended period of days during the 5 years they lived there. One real long rain and I had water under the floor.
I've since had a company waterproof the basement. I wouldn't hesitate to do this type of floor now after seeing the basement dry for 2 years.
If you do it, I would lay a grid of PT 2x4s down to screw your plywood to, insulating between the spaces in the grid. Of course if you are just going to put down carpet it might not matter.