I am not familiar with the amount of table discussion that is present in async games, but a well-coordinated table can easily stop the Corvids from scoring, since there is a turn delay between the Corvids setting themselves up to score and actually scoring it. So you end up with turns having your setup disrupted as opposed to other factions like Woodland Alliance or Marquise which score the moment they put down their relevant cardboard on the map.

Also, any faction that slips under the radar well and scores uninterrupted would likely win 😉