I noticed this on a smaller scale last week, but thought there must be delays somewhere. But now I've seen a big difference.
Looking at the individual statistics for a page, on the pie graph, the numbers are a LOT higher than on Analytics, even accounting for different day rollover times.
I just had a wizz article go viral and got about 6,000 unique views in the first day according to Wizzley, but Analytics says it only got about 1,000 views [and with nearly 2,000 FB likes on that first day, I'm really doubting the Analytics!]
Just wondering if the UA code is being inserted correctly all the time or if there's another explanation for this?