I would think that as knowledgeable as Miles seems to be, he knows good wine can be made from Cabernet Franc, and simply didn't like that winery's poorly made version.
-ccm
Masseto, now you are talking! Probably the greatest single bottle of wine I have ever had. BTW, Chinons are 100% Cabernet Franc and are alaways a favorite of mine, Charles Jouget in particular!