I wanted to see if there's anything like- 'We are not doing this to see end conversions of our Ads i.e. whether one clicks the Ad and buys the same in the a physical store'.

Like Google did(doing?) with Visa/Master card data.

Closest related statements I could find in the blog,

>while Facebook, Inc. owns and controls Calibra, it won’t see financial data from Calibra

>More commerce means ads will be more effective, and advertisers will buy more of them to grow their businesses.