The Boiling upgrade states that it allows towers and keeps to have this effect against nearby units and while RUS towers are different, the same is for Longbows They are different from other archers yet benefit from all upgrades an archer do. Not drifting it too far. The normal boil upgrade benefits other towers and the towers that are used on stone walls, Rus has no stone walls nor the other towers and is not benefitting of the boil upgrade which I think it should.
If it is intended the way it currently is, could a dev confirm? please!