Possibly, but it might have a higher ratio of mob groups that can slay me without fail, without me getting a turn. For instance, in Zanarkand there is the mob group with the kicking robots, every group that contained them would kill me without fail whether they ambushed me or not, because they all had higher agility than me and used moves that could kill me in one shot, no matter what. The only hopes of surviving were happening to get pre-emptive strikes against them, or just manage to make it through without encountering even one group of them. Zanarkand wasn't really that much space, so I could luckily make it 6-7 battles without encountering them. But in Sin, I may have 60% of mob groups capable of killing me without me even getting a turn. This would make a 10 battle run nearly statistically impossible. We'll just have to see how it works out and hope for the best I guess.