His brain definitely would NOT experience the same g-forces as hitting concrete. You have less than an inch of deceleration space against a surface that hard, whereas getting caught by superman would probably give you at least twice as much space, if not way more, which would reduce your g-forces by more than half
A guy broke both his arms, which made him angry and sad. But then his family helped him become happier. He told the story online and it made everyone else sad.