Is it just me or in Forbidden West machines are usually in way smaller groups than in Zero Dawn? I dont think we can see herds of machines like Grazers in Zero Dawn at least not that big... Also in Zero Dawn even some more powerful machines could be found in group of more than 1 like Frostclaws. And in Frobidden West they are lonely.
Edit: I mean I partially understand that imagine group of 3 Slaugtherspines against 1 Aloy XD but others could have larger groups.