Share count on Facebook Graph API LESS than actual share count on Facebook

[tk1996]

I am trying to extract data about specific news articles shared on Facebook. I have read that with the new version, the share count shown on graph API is the sum of the shares, copy/paste of link on messenger, likes etc.

However, I have been testing out a few links, and found that one BBC link is only receiving 86 counts on Graph API, but has 5.2K likes, 800 shares and 743 comments.

This is the link for reference: http://www.bbc.com/news/business-38488241?ocid=socialflow_facebook&ns_mchannel=social&ns_campaign=bbcnews&ns_source=facebook

Could anyone explain why this is happening? Also could anyone explain if there is any way to get the actual share count on Graph API rather than a combination of all these things?

Also, please correct me if I have said anything wrong - I am new to any sort of coding.

Thanks