Tickets are the total number of entries across all your Magic events, in any format, in a rolling calendar year. All play counts. Modern, Commander, Vintage, Legacy, Standard, Casual events, Tournaments—everything.
Engaged Players, on the other hand, are players that participate in at least 6 events in any format.
We want stores to record all Magic play in their store, regardless of if it is a Casual or Tournament format. By doing so, stores are rewarded with more Tickets, and therefore more promo packs!