Check the links at posts 21 and 32 —
Pilots are trained on ditching procedures as part of their training and planes are ditched all the time without breaking up. Otherwise what is the purpose of flotation devices on planes — just for appearance sake.
True about pilots, but all indications so far are that the pilots were dead,or unconscious. No one was in control of the aircraft.
The possibility of ditching intact are infinitesimal.