I have decided to answer a few on my own.
Here's my thoughts on these.
1. I don't really think on open ground he has any chance against Hal. Kyle, yes, but not Hal. Hal's will is uber and probably the strongest in DC.
2. He's agile enough that he may be able to get close and toss a batarang between Arrow's shots. Will be HARD if Ollie has his trick arrows all ready, but possible.
3. Batman talks CM out of it. Billy Batson's 8 year old mind is putty in Bruce Wayne's hands.
4. Solomon Grundy is part plant. Bats probably would have prepared some sort of herbicidal device to weaken him before the fight.
5. I'm sure Bruce would have found some sort of EMP that WILL work on Iron Man, in spite of the claims that it wouldn't.
6. Captain America would get a straight up fight from Bruce out of respect. I can see this going either way.
7. Juggs is the one I don't see him beating without some major trickery like a falling building or some sort of pit. Since the fight is on open ground, I don't see him beating him. He may be able to dodge his blows long enough for Juggs to just give up.
8. Savage Hulk was once KO'd by Tyrannus, by use of a small tranquilizer device that attached itself to his forehead. If it weren't for Goldbug removing it, he would have eventually regressed into Banner and goodbye Hulk. I think without outside interference the same scenario could be replayed and Bats would find himself standing over a sleeping Dr. Banner.
Those are my ideas. I don't really see how he could beat Hal (sonic devices wouldn't work, he's fought Sonar too many times for that).
I don't see him really defeating Juggs. Maybe I didn't think of anything, but even the device that would work on Hulk wouldn't work on Juggs with his helmet.