Global Warming Predictions, Two Contrasting Views

1) "Because of natural variability, it is impossible to pinpoint what 2100 would look like. The climate sensitivity to greenhouse warming is still pretty uncertain, and it is not clear whether or to what extent man-made factors will dominate the climate of this period. It IS clear that the computer models used to predict future warming were deeply flawed."...Judith Curry, Georgia Tech University climatologist.............2) "Half of Florida and San Francisco will be under water by the end of the century (obviously I'm paraphrasing)."...Albert Gore, he needs no introduction.............So, which of these two individuals has more adroitly thought the matter through? Anybody?