> 232 did not land wings level!
Indeed they didn't. Also during the whole ordeal this airplane was caught in a hardly controllable sequence of phugoid oscillations that didn't have anything to do with the choice of landing location. They just were unlucky enough to have entered the downward cycle right at the moment of touchdown. Had they not touched on concrete, chances are the plane would have toppled over much more violently, probably killing all on board. No way a landing in an outside field would have increased the survivability rate in this scenario.
This Sioux City accident was a tragedy, but it is also a prime example of an outstanding crew who survived because they thought outside the box.