Grow Statistics Not Matching With Jetpack

Hi,

I've just noticed that in my Grow analytics, the statistics are showing less pageviews than what I can see for the same day in Jetpack.

I also note that the pageviews on Grow are showing as less than the number of outbound clicks to my site from Pinterest…surely that can't be right?

For example, on Oct 22, Grow is saying I had 1,896 pageviews, whereas my Pinterest stats say I had 2.22K outbound clicks on that day.  My Jetpack stats are saying I had 2,184 page views.  

Obviously I'm super happy with the payments from Journey but was just wondering about the discrepancy…can you explain?

Thanks so much!

Stephanie