David B, I think it works like this:
Suppose I see your thread with the P125 review. (A thread view is counted).
Then I go watch the video on YouTube.
Then it is coffee time, I go back to Clack and respond with a little post and/or give you a like. (A thread view is counted).
Then at the end of the day, I am bored and tired and come see who else has said something about your review. (A thread view is counted).
And so on, and so on.
Thus the views a thread gets will almost always be an n:1 multiple of your YouTube views. (Theoretically, that is, because people can of course also land on your video without a visit to Clack).
This is my simple understanding of these matters…
Cheers and happy statistics,