Scott,
2012 McDougall has a tighter grip than 2012 Falstaff at this stage and should be an incredibly long-lived wine. Some descriptors I might use would include: dark, brooding intense to the core. Rich, structured, backward, iron-like minerality.
I attribute the character of 2012 McDougall to the character of the soil and climate as McDougall has very rocky, hard & dense sandstone soils which are nutrient deficient and devigorating. The vines struggle at McDougall as they are challenged to find water in these shallow, hard & deficient soils. As for weather, McDougall sits above the clouds at 950+ feet elevation. This leads to the fruit being in contact with more sunshine as opposed to vineyards at lower elevation which often see more cloud and fog cover. In turn, McDougall has a deeper, more phenolically ripe signature to Falstaff (which sits at 300 feet elevation and is more often in fog).
As for Falstaff, this vineyard is comprised of Goldridge soils which are a type of sandy loam and which allows the roots to dig deeper down into the sandy soil in search of water. These soils are softer and have incredible drainage capabilities. You can reach down in this vineyard, pick-up some soil and let it roll through your fingers and it will feel velvety. I believe these soils directly correspond to the wine created from Falstaff with it’s elegant, subtle, softer inviting edges. Falstaff also has great crunchy, mineral fruit with often stunning acid retention from the cooler climate as well. Because of where it is situated, the area is the coldest micro climate we work with and physiological ripeness is challenged. Falstaff often sits in a fog bank and can have large swings in climatic weather from day to evening. 40 degree swing can easily be achievable. It is also rare to see a day above 90 degrees unlike (for example) parts of the Russian River which can see many days above 90 and sometimes during the growing season a few days above 100.
Hope that sheds some color.
I will leave you with this: these two wines were farmed and fermented identically. The difference in aromatics, texture, body, finish, etc. solely comes from the plants in the vineyards and soils they were planted in.