In this week’s round-up of the global box office scene:• Slow start for $180m fantasia casts doubt over George Clooney’s star leverage• Aamir Khan’s PK sets new Bollywood high in China• Pitch Perfect 2 star Anna Kendrick in harmony with film-musicals revivalStill no serious competition for Marvel’s superhero partypack Avengers: Age of Ultron, with Tomorrowland flopping (see below) and Mad Max: Fury Road – perhaps because of its adult rating – not comporting itself exactly like a global blockbuster.