I'm starting to think filtering depends on playlisting since this release by Drake. He was added to almost all of playlists out there that's why got close to no filtering. Adele was also added to alot of playlists but not as many as Drake's hence she did have filtering but decent while 'Butter' was nowhere compared to these 2 in terms of playlisting that's why got almost half of it's streams filtered.
That'd confirm what those armys noticed when they tested spotify streaming
Coldplay's album was released this friday