Going for two on the road is always a good thing, and you're attempting to remove the umpiring equation from the game where they would have numerous opportunities to tilt things against you. In this case, they ignored three Defensive penalties in one play. How many would they have avoided or called against the Bengals had there been 15 plays to do so?
It was the right call to go for the win. Plus, the Bengals are in desperation mode. They needed to walk out of there with a win. Going for two was their best chance. Their Field Goal kicking unit has been struggling,...not exactly the kind of thing you want to go in with in an OT game.