I don't think the kings can beat any decent game at all.
At the very least the situation is not nearly
as clear-cut as the first few posters claim it to be.

It's all about the FTP.

If the other players are willing to make 'negative' EV
calls (raises?) preflop to set themselves up for the huge
EV of playing against face-up cards.

Poker is more about uncertainty and deception than cold
odds. And the kings give up way more than they get.