Warbirds had Large Scenarios, Scenario Lites, EMC (Euro event), Target for Tonight, Weekend Warrior, and S3s.
WB had a large and sophisticated event community, but it gradually declined as WB 2.77 sat unchanged and WBIII stumbled along from one beta patch to the next. It is now a shadow of its former self.
The WB S3 series is a great event, the last really good event over there, but it struggles under the weight of WBIII and its incomplete plane set, and lack of terrains, and other problems.
I had a close look at where AH was going with their events, and jumped ship in June, to form my new squad here. I have not looked back since, and am having a great time in the events here, as many of my former WB comrades are as well.
Regards.