Because you’re comparing apples with oranges. Someone can go through 80 battles without a Mongo, and another flips the wrong routes and has to take Mongo several times. Unlike the prior event, this one has huge variability across scores. See leaderboard:
17 FEWER battles and 163 MORE points.
So if you wish to compare, it has to be like for like (same map route all the way). But if you cannot understand that and insist on comparing the only way you can manage, you do you.