The big problem is as the mix is running through the forms to get to the far side of the basement wall, gravity is pulling the aggregate to the bottom and the water is floating the cement out of the mix. The walls at the far corner from the pour are most likely just sand and what is left of the cement.

The same applies to the floors and driveways. Aggregate goes to the bottom and the cement floats to the top with the sand somewhere in between. Then after a couple of winter's of freeze/thaw cycles the top of the driveway starts to flake off. But by then it is the home owners problem and the contractor gets away with it.

I watched those clowns pour a driveway that was fairly steep with thinned out mix. Before they could get it all screeded down, it was running over the forms at the bottom end. They had to quick grab some guys with shovels and start tossing it back up to the top. Eventually enough of the excess water ran out the bottom and the mix stiffened up enough to stay in place. Two years later that driveway looked like it was 80 years old.

By the time our house in that neighborhood was 5 year old the garage floor had cracks that were an inch wide. You could look down inside and see the fiberglass fuzz sticking out into the crack. It hadn't added anything to the strength of the pad.