Original sentence: CS: Source is more of a tactical-shooter than deathmatch-style games, such as the Quake and Unreal Tournament series, but it does not put as much emphasis on tactics as other titles such as the Rainbow Six series
Edited sentence: CS: Source is more of a tactical-shooter than deathmatch-style games, such as the Quake and Unreal Tournament series, but it does not put as much emphasis on tactics as more advanced titles such as the Rainbow Six series