The article is misleading. You don't need to drink 74 drinks per week to be in the top 10 percentile. 74 drinks is the average of all those in the top 10 percentile and not the lower boundary.
I don't think it says that. The author points out that upon entering the top 10 percentile, "you'd still be below-average among those top 10 percenters." PS. Send my regards to Watson!
The article says: "But in order to break into the top 10 percent of American drinkers, you would need to drink more than two bottles of wine with every dinner." And according to Watson that's 10 drinks ;-) (http://www.rethinkingdrinking.niaaa.nih.gov/default_wine.asp)
Right. so two bottles of wine is 70 per week. and you would need to drink MORE than that(let's say, by about 40% of a bottle/week) to crack the top 10 :)