The reason why you are seeing different values in CrowdTangle, Creator Studio, and Page Insights is because each surface is measuring different things.
Creator Studio shows metrics on videos that:
You have uploaded.
Were viewed during a specified timeframe, no matter when the videos were uploaded.
Page Insights shows metrics on videos that:
You have posted, whether you uploaded them or shared them.
Were viewed during a specified timeframe, no matter when the videos were uploaded.
Fun fact: Page Insights metrics are often slightly higher than Creator Studio metrics because Page Insights includes videos you have shared, whereas Creator Studio does not.
CrowdTangle shows metrics on videos that:
Were uploaded or shared by any account you are looking at.
Were posted on a specific date, no matter when the videos were viewed.
For more details on how CrowdTangle handles video views, check out our video views FAQ!