Well HU this would be indeed a wa/wb situation sometimes. If he is able to calldown with QQ- as the flop is 2-suited then wa/wb would be too weak but otherwise that's fine.
3-way it's a bit different. A coldcall is no option for me (can't explain exactly why). So it's either 3-bet or fold.
Board: Ah Kc 5h
Dead:
Equity Gewonnen UnentschiedenVerloren Hand
Spieler 1: 39.932 % 32.322 % 15.950 % 51.728 % Ac8h
Spieler 2: 31.429 % 27.937 % 7.715 % 64.348 % 44+, A5s+, KTs+, QJs, A8o+, KJo+
Spieler 3: 28.639 % 23.182 % 11.645 % 65.173 % 55, ATs-A2s, K8s+, K5s, QTs+, J9s+, T9s, AQo-A2o, K9o+
With 6% more than average equity a fold is too weak. We are still able to fold on the turn or river to more action so we won't lose that muuch more the times we are behind. We also often get payed off by the fish if SB folds as well.
The turn is even worse for us. We improve but I don't see us ahead very often anyway. A 3-bet is too much in my opinion.
I prefer a tough fold as I don't see BB bluffing here and SB's range is tight now as well.
Board: Ah Kc 8s 5h
Dead:
Equity Gewonnen UnentschiedenVerloren Hand
Spieler 1: 8.971 % 7.480 % 3.102 % 89.418 % Ac8h
Spieler 2: 65.448 % 65.296 % 0.423 % 34.281 % KK+, 55, AKs, A5s, AKo
Spieler 3: 25.581 % 24.058 % 3.166 % 72.776 % KK, 55, A8s, A5s, K8s, K5s, A8o, A5o
The ranges might be a bit too tight but we would need 14% for a call anyway without considering being 3-bet and that we have to call the river as well most of the time.