I just did a comparison on the same website. Says it all.
Developer MAU DAU
Zynga 237,654,608 55,324,139
Facebook 580,000 90,000
Rovio 14,790,000 1,940,000
Spotify 25,100,000 6,500,000
Electronic Arts 46,389,347 9,938,550
Here's the link:http://www.appdata.com/compare/devs?compare_type=developers&facebook_devs[]=Zynga&facebook_devs[]=Facebook&facebook_devs[]=Rovio&facebook_devs[]=Spotify&facebook_devs[]=Electronic+Arts&commit=Compare+!