I wont predict the complete top 10 of next year, but at least the cbm, in this case worldwide:
Justice League: 900-1.1
Guardians: 850-950
Spiderman: 800-900
Wonder Woman: 750-800
Thor 3: 700-790
Logan: 550-600
the hardest battle, imo, will be between Spiderman and Guardians. After G1 success, one would guess the sequel will do more than Spiderman, but you never knows.
Potential surprise: Logan. I guess it could surprise us all and do more than 600m, but as of now, I'll go the safe route. At the same time, who knows, it could even do less than 500, lol. But with its quality and R-rated, it could be a fan pleaser, I guess