Why data is different in Email Performance Report click # and Email Link Report "Leads #"?

Hi There,

I run a Email Performance report and Email Link report for a same email, but click #  is different in both report and I am a bit confused.

In Email Performance report Click # is # of people who clicked at least one link, so it should match with Email Link performance Leads #, is that right?

I double checked to see I chose same email campaign, and also smartlist is using exact same filter.

Please let me know!