Hi everyone,
So after some investigation, we came to a pretty simple conclusion.
Basically, the Target Experience visits and unique visitors account for all the pages viewed in a single session where the relevant Target Experience cookie is present in the user's browser. When we applied a page name filter to the Target Experience it showed all the pages visited by the user after they received the Target Experience.
This was probably a lack of understanding on my part of how the different dimensions work and what is, and isn't comparable.
That's why we can't simply compare the number of visitors to the page with the number of visitors logged against the Target Experience dimension as the statistics for page views will simply show the number of visitors to the page, but the Target Experience visitors will aggregate visits to the page where the Experience triggered and all other pages they subsequently visited in the same session.
What we'll just do from now on is apply a page name to the workspace or create segments by drilling down into the Target Experience stats.