520m. Comparisons between IM3 and TF3 are unsupported until anyone can show me a scene from IM that matches TF3 city battle, wing suits, Optimus vs worm, skyscraper collapse or the highway battle.
Those are some incredible holds and it looks like anything between 425-450m is a lock which would make it Weinstein's biggest hit(?). Still yet to open in Argentina, India, Indonesia, Japan, Korea, Philippines, Singapore, Taiwan, Vietnam and Thailand. Maybe 500m is a lock.