Oswaldo Costa wrote: although, of course, I could be the unusual one by always drinking red wine at around 70/72F.
Interesting topic, Oswaldo.
I don't think that a drinking temperature of 22°C (approx. 72°F) is that unusual even in North Western Europe, from where the "room temperature"/"chambré" wisdom originates. As you probably know this guidance has its origin from normal room temperatures in NW European aristocratic and bourgeois homes in the days before central heating when, except in fairly rare warm spells of weather, dining room temperatures were never above 18° (about 66°F) and were often much less in winter except for those sitting close to the open fire. However, I remember the pre-central heating days in the UK (which was very late adopting it) and many people used to warm their claret and Burgundy quite brutally by the fire, although the practice was deplored by serious wine lovers. It is still the practice in a lot of restaurants in the UK to keep a rack of red wines in the kitchen where the temperature may be close to 30° and the lighting is bright; if I cannot avoid one of these bottles, I ask for an ice bucket but the wine has often suffered somewhat from heat and light damage, which may be aggravated by brutal cooling.
Wine-lovers' wisdom in this part of Europe is still that full bodied red wine is best served between 16° and 18° and you will see this reproduced in the Johnson/Robinson World Atlas of Wine. However I have noticed that Italian books and back labels often recommend 20-22°C. On the other hand, the one Spanish guide I have, La Guia de Oro, recommends 18°C for Rioja and Ribera del Duero.
Obviously I have drunk with enjoyment red wines at up to and slightly over 22° particularly at the end of a bottle on a warm day and sometimes, together with the additional airing, the warmer temperature reveals different facets; IMO the wines which suffer most are those with high alcohol, which the warmth emphasises.
White wines are a different ball-game and here I find them often served too cold.
Having said all this, your description of the Breton and Baudry wines ring bells with me, so the different temperatures cannot be all that decisive.
This topic really deserves a separate thread. I think there have been some in the past.