honestly the game structure is built so that it's much easier to favor nilfgaard than temeria/northern kingdoms.
the Emperor is depicted as a hard, but ultimately sane and actually quite fair man whom makes a LOT of allowances for Geralt (note if you get the witcher ending, he doesn't throw your arse in jail even if you go out of your way to insult him). that's already better than Anarietta.
Radovid on the other hand throws you to the wolves. same thing with Dijkstra.
from Geralt's standpoint, if his adopted daughter is going to become Empress anyway, better her in power than either crazy Radovid or Dijkstra honestly, and the prospect of massive continued bloodshed from the North all the way to Skellige.
from a power perspective, it's pretty clear that the Northern Kingdoms is only holding on by the skin of its teeth because Radovid is a military genius. IE if the Third Northern War ended in a defeat for Nilfgaard anyways, it's pretty clear it's just a temporary setback like the previous one.
the Emperor is depicted as a hard, but ultimately sane and actually quite fair man whom makes a LOT of allowances for Geralt (note if you get the witcher ending, he doesn't throw your arse in jail even if you go out of your way to insult him). that's already better than Anarietta.
Radovid on the other hand throws you to the wolves. same thing with Dijkstra.
from Geralt's standpoint, if his adopted daughter is going to become Empress anyway, better her in power than either crazy Radovid or Dijkstra honestly, and the prospect of massive continued bloodshed from the North all the way to Skellige.
from a power perspective, it's pretty clear that the Northern Kingdoms is only holding on by the skin of its teeth because Radovid is a military genius. IE if the Third Northern War ended in a defeat for Nilfgaard anyways, it's pretty clear it's just a temporary setback like the previous one.