No, there is nothing to indicate it has 100% of the trophies. Even if there were only 686 trophies, there's also nothing to indicate that all 686 of those have been obtained.So is it confirmed if ESRB leak has 100% of all trophies? Because if so, then that means all characters were unlocked.
The confusion was how all the trophies had the number X/686 except for Barbara, which had 6/11. People assumed this meant different save files and that the footage was not all from the same account at the same time, but then someone noticed Barbara was 6th in one of the series of trophies received from a single player mode, indicating that the Barbara trophy pic might be just looking at the line-up of trophies earned in that particular game.
Link to the leaked pics being discussed