Yes, it way very 'optimistic' to predict a global phenomenon here.
If it breaks out in other markets than the US, I would think it could be middle and south america.
#1 in New Zealand and #2 in Australia sounds pretty good for this Indie film.
Next weekend, it starts in most of Middle and South America, this should be the major market outside the US.
OS 1st weekend numbers so far:
Australia - $1.17M (#2)
New Zealand - $270K (#1)
South Africa - $88K (#2)
United Arab Emirates - $154K (#8)
Iceland - $15K (#3)