We should also consider something about the characters themselves, and how each member from both teams would approach the battle. Based solely on CIS what usually happens in team battles is each opponent would take on a foe of equal or similar abilities, because let's face it, if Hal fought Thor, or Norrin he'd likely have a hard time, but in retrospect the same could be said for Quasar if he took on Orion, or Superman he'd also have a hard time.
I see Thor and Orion flying headlong into close quarters battle, just as I see Superman engaging the Silver Surfer, and Quasar mixing it up with Hal, which leaves Nate vs Zatana. This is solely based off of CIS, and the fact that forum rules state that everyone knows what the others are capable of. Which team would win in this case? Hal would be the weak link in more areas than anyone else on his team statistically speaking, but that's just my opinion.