He was barely above average offensively. Even if the doomsday predictors said he would be below average, they had more evidence to say that than people had evidence to say he would be good. Or maybe their evidence wasn't as definitive as they thought it was? I mean, by your logic, can the doomsday predictors ever be wrong? If the player they predict to perform poorly does so, they are right, but if he performs well, they had the stats in their favor to predict he would perform poorly and so they took the only reasonable position, even if they ended up wrong? The fact of the matter is that statistics, while very useful tools (especially for evaluating performance), are not as definitive for predicting player performance as some would like to believe. These are human beings we are talking about, after all.