As I remember the tags are in the code as follows:
“abstractligthinfantry”= ERK + coyote + rattan + shotel + etc
“coyotemen”= “abstracligthinfantry” - ERK
“abstractrangedshockinfantry” = ERK + nothing
(The tags in the code can be somewhat confusing.)
So, skirmishers used to have a X0.75 bonus against “coyotemen” and now they have a X0.75 bonus against “abstractligthinfantry”. Considering the X2.0 bonus against ERK, skirmishers now have an effective X1.5 bonus against ERK. that is, its damage has been reduced by 25% against ERK. on the other hand, ERK now has a X0.75 bonus against all infantry; its damage has also been reduced by 25% against eskirmishers. additionally ERK armor has been reduced from 0.25 to 0.20.
In summary, the ERKs have been slightly weakened against the skirmishers, but their battles will be longer and the ERKs have been heavily weakened against heavy infantry, especially musketeers.
That seems more reasonable. but in my opinion there is still a lack of improvements for jaguars and otontin. Even so, I don’t know if everything will be compensated; The ERK were characterized by being able to face the infantry under artillery fire.