Anchorhead, thanks for the chart but I don't think it is completely comparable. If you were to make a chart of fresh directors who made sequels and we can see how well those turned out (James Cameron and Aliens, for example), then I think that would be a better prediction.
I'd agree- what do all those directors listed have in common? They are all from a previous generation (the 70s & 80s) ...... and thus they grew up seeing different films themselves, not to mention having a different outlook in general compared to this generation.