These numbers sadly aren't that clear. 1.1 billion turns sounds very impressive for a single week. But what is meant with campaigns? If you compare the numbers, each campaign only had 66 turns on average. Hence, each age played counts as a campaign? Then, 16.7 campaigns would equal 5.5 million full age games. If we assume 1 million players, that would mean everybody played more than 5 full games in the first week on average. That seems a bit much, doesn't it? I would assume that anything larger than 2 games per week (20+ hours) is too high for the average player. So, maybe its just "campaigns started" and there were millions of restarts... In any case, sadly, these numbers do not really tell us that much.
In other news, sold copies for civ VII per week on gamalytic fell under 6k for the first time today: only 5.9k player bought it in the past week, apparently. Gamalytic currently puts the owners on steam at 937k (based on reviews, playtime-based guess is 965k, rank-based guess in 911k). But the error margin is huge: 681k-1.1m.