Bryan Caplan vs. Amy Chua debate

Here I am, sitting on a bench in downtown Budapest, reading the Guardian, when on p.20 I see a published debate between Bryan Caplan and Amy Chua.  If I have one wish, it is that Chua would put her anecdotal points in the form of a statistical argument.  Which assumption behind the twin adoption studies is she rejecting?  Or where are those studies engaged in too much aggregation?  I suspect she will never tell us.  Coming back to the hotel room, I now find Bryan’s commentary on the debate.  The two have very different senses of humor, and I bet she wouldn’t think that Bryan’s jokes are funny either.