Ok, the bot wants to pay 1 to duel again. Stones back to 3-3 with White gaining another one after the duel. Things could go anywhere from here and both players have a reasonable chance of bidding anything, but it's predicting the most likely outcome is white bids 2, black bids 0. You want to go with that, or randomize?
Luckily enough, the result of 2-0 is also the result that is "just above average" for black, if that's what we're targeting. The next most likely result is 2-2, but that's not very good for black.
No matter what the result of the duel is, Black is likely to next move Ke6.
EDIT: for what it's worth, I just had my system play 100 quick matches against itself from this point and the result was White 44 - Black 56. I'm willing to call this "not a lock for White" if you are.