@oristarA,
Naw, Oris. He aint talkin about a "beating" in that sense. He means "getting there first," beating me to the goal, and that kind of beating.
If he was going to take advantage of me, he could, by watching where I'm looking, beat me to the prey I am pursuing. So, since I aint wearin sunglasses, I must be assuming that he will NOT exploit his observation of me to "outcompete" me.
The whole argument seems rather absurd to me, but that's what it appears to be.
As to your specific question of "whose aggression," he means something like this.
If a lion is coming at the crowd, that lion will, lets say, take the closest person he finds. This other guy might beat me to the escape. Again, lame argument, but...
In this case the "aggression" would be that of the lion, eh?