The advantage was on Igor and his team's side. If they continued to fight within this Inner World, the invaders were more likely to lose than win.
The Great Mentor firmly believed this.
However, he knew that even if they won within the Inner World, it wouldn't change the fact that the invaders were stronger than Igor and his team.
The invaders had merely lost a battle within the Inner World, a domain they were not skilled in. They had not yet fully revealed themselves, currently fighting only through their mental state. The great distance and immense difficulty involved indicated that the invaders' strength far surpassed that of Igor and his team.
