Check equality by ID -> OnlineBeatmapSetID -> Hash -> ReferenceEquals
Check equality by ID -> OnlineBeatmapSetID -> Hash -> ReferenceEquals

peppy/osu,EVAST9919/osu,smoogipoo/osu,smoogipooo/osu,NeoAdonis/osu,UselessToucan/osu,UselessToucan/osu,NeoAdonis/osu,peppy/osu-new,EVAST9919/osu,NeoAdonis/osu,2yangk23/osu,peppy/osu,ppy/osu,johnneijzen/osu,2yangk23/osu,smoogipoo/osu,smoogipoo/osu,ppy/osu,peppy/osu,johnneijzen/osu,ppy/osu,UselessToucan/osu