This discussion may contain spoilers!
So in the first episode of TWAU, if Toad tells you about what happened at his apartment, he mentions if word ever got out that Bigby knew, Tweedledee/Tweedledum would come back to KILL Toad Jr! So what if you chose to capture Tweedledee maybe Tweedledum would come back and kill Toad Jr. And I have a feeling that Toad Jr. Didn't give us all the details when you question him so that could be very important. Just a theory, but tell me what you guys think!