In a comic DCNU JL wins. In a Forum fight JL wins.
The only chance for WBH to win this is, CIS off for him and CIS on for the JL.
That means Forum WBH, like Forum SS or anyone else will have the first move and use instantly everything you can come up with. If you let him fight an "comic" JL they will let him do what he wants and just react. Against an Forum JL they will use their far superior speed instantly and stomp the sh1t out of him.
In a comic, with CIS on, they might have a harder time, because they will wait and see but with their devices, speed and power it's still a solid majority.
In a DC/Marvel crossover, Superman would still solo 😉.