[If there were only two left... its something Bruce really doesn't want to think about much, honestly. He certainly hopes they can stop this before there's only two of them left.]

...I highly doubt he wants two 'kings', if he ever wanted a 'King' at all. [Because like hell Bruce believes anything the Kingmaker says at this point, more or less.] I wouldn't be surprised if he forced them into a battle for their lives.

[If there's only two of them who knows, they might just probably destroy each other in the end and only the Kingmaker wins.]