I read, with great interest, Stephen Brook's interview with Philippine de Rothschild of Mouton and Eric de Rothschild of Lafite in the latest Decanter. Although they are on friendly terms now, the cousins seemed to have conflicting opinions on almost every question.
It got me to thinking about the similarities and contrasts between the two wines, which come from adjacent vineyards. My own experience with them is limited to just a few tastings of very young wines, where I've clearly preferred Lafite. The WS ratings each year seem to favour Lafite rather consistently as well.
What has been the experience with the mature wines? Does one consistently win over the other when at full maturity? In light of the quality of recent vintages, did Mouton really deserve its promotion to first growth (i.e. is it really that much better than Leoville Las Cases or Cos D'Estournel?