I think this is psy-ops, why would Jones, one of the primary party leaders of the democrats come out on TV and reveal the opposition candidates that scare them most?
I think what Jones is trying to tell his fellow Democrats is not to be so quick to dismiss Rubio because he drank a sip of water the other night. People forget these things quickly and Rubio will be more polished next time. And there most certainly will be a next time.