• Pre New 52, No Starheart, Kent v Nelson and Ronnie Versions of Fate and Firestorm


• Standard Gear


• Battle on an Indestructible Planet


• Perfect Teamwork


• Morals off, Bloodlusted, no bfr


• Start 500 Meters Apart

Round 1- Individual Battles

1. Black Adam vs Superman


2. Obsidian vs Martian Manhunter


3. Alan Scott vs Orion


4. Dr Fate vs Wonder Woman


5. Power girl vs Hal Jordan


6. Captain Marvel vs Captain Atom


7. Jay Garrick vs Barry Allen


8. Firestorm vs Atom Smasher

Round 2- Team Battle

Individual

1. Black Adam vs Superman - Basically he doesn't rely on as much scaling


2. 
   Obsidian vs Martian Manhunter - Unless Obsidian is severely lacking in TP resist, this isn't fair


3. 
   Alan Scott vs Orion - This just isn't fair


4. 
   Dr Fate vs Wonder Woman - See above


5. Power girl vs Hal Jordan -See above


6. 
   Captain Marvel vs Captain Atom - AFAIK, Atom is borderline fodder pre-52


7. Jay Garrick vs Barry Allen - Just better


8. Firestorm vs Atom Smasher - No idea

Team Battle

JSA stomps, Dr Fate and Alan can both arguably solo

1. Black Adam vs Superman
   


2. Obsidian vs Martian Manhunter via TP
   


3. Alan Scott vs Orion
   


4. 
   Dr Fate vs Wonder Woman Even a rookie Fate would stomp.


5. Power girl vs Hal Jordan
   


6. Captain Marvel vs Captain Atom Cap beats the likes of Jordan and schooled Firestorm, he does the same the Batson.


7. Jay Garrick vs Barry Allen
   


8. 
   Firestorm vs Atom Smasher

As a team battle, JSA stomp.

Literally the JLA win every match for individuals except Fate and Diana where Fate wins. JLA wins the Team Battle with J'onn as MVP

Black Adam vs Superman - I've honestly always held the stance that this is an either way fight for me. I'd honestly back Adam, given he's more likely to cut loose and has the advantage of magic.

Obsidian vs Martian Manhunter - There's few ways J'onn can take it. He'd give Obsidian a fight, but not much more than that.

Alan Scott vs Orion - Borderline mismatch.

Dr Fate vs Wonder Woman - Same as above.

Power girl vs Hal Jordan - Hal by a longshot. She could probably break through some of his constructs, but if Jordan really went all in he could easily subdue someone of Karen's strength class, and he has before. He's also smarter, has the advantage of speed, versatility and superior damage output.

Captain Marvel vs Captain Atom - Should be a nice fight, but CA's destructive output and stats are superior.

Jay Garrick vs Barry Allen - Barry. Just plain better.

Firestorm vs Atom Smasher - 'Storm has too much haxx.

Overall, the JSA has more powerful heavy hitters like Fate, Scott and Obsidian. They should win.

1. Black Adam vs Superman
   


2. Obsidian vs Martian Manhunter = If Obsidian lacks strong TP resistance, Martian Manhunter


3. 
   Alan Scott vs Orion


4. 
   Doctor Fate vs Wonder Woman


5. Power Girl vs Hal Jordan
   


6. Captain Marvel vs Captain Atom
   


7. Jay Garrick vs Barry Allen
   


8. 
   Firestorm vs Atom Smasher

JSA wins.

Kent V. Nelson is not that powerful keep in mind the fact that Circe is more powerful by far and was harming Dr Fate as a side effect of unleashing her powers. Diana fights Circe toe to toe too often to somehow lose to one of Fate's weakest incarnations.

Round 1- Individual Battles

1. Black Adam vs Superman - Whilst Adam and Clark are in the same ball park, Clark has much better consistent showings of power whilst Adam relies a bit too much on scaling.


2. 
   Obsidian vs Martian Manhunter - Unless J'onn uses his TP, this is a one sided fight.


3. 
   Alan Scott vs Orion - Mismatch


4. 
   Dr Fate vs Wonder Woman - Mismatch


5. Power girl vs Hal Jordan - Mismatch


6. 
   Captain Marvel vs Captain Atom - Pre 52 CA is not nearly as impressive as his Post 52 self


7. Jay Garrick vs Barry Allen - Is much faster even tho he is Pre 52 showings are limited


8. 
   Firestorm vs Atom Smasher - Borderline Mismatch

In the case of team a team Battle, the JSA have two very powerful people in Fate and Scott who could probably solo.

@ancient_0f_days: I always get the Fates confused tbh haha. Even then, the JLA win anyways. People are underestimating J'onn's TP

1. Black Adam vs Superman---Superman wins due to feats count
   


2. 
   Obsidian vs Martian Manhunter


3. 
   Alan Scott vs Orion


4. 
   Dr Fate vs Wonder Woman---A mismatch
   


5. Power girl vs Hal Jordan---borderline mismatch specially if Jordan cut loose
   


6. Captain Marvel vs Captain Atom
   


7. Jay Garrick vs Barry Allen
   


8. 
   Firestorm vs Atom Smasher

I'd give it to JSA due to Alan and Fate.

Superman's stronger than Black Adam and has better feats, Martian Manhunter could telepathically subdue Obsidian, Orion is strong enough to overwhelm Scott without the full Starheart, Wonder Woman has beaten Circe and Fate is much weaker overall, Hal has feats against Hank Henshaw and Superman so Powergirl isn't a threat, Captain Atom has more power output than Captain Marvel, Barry is faster than Jay, Firestorm can turn the ground into quicksand and the air into steel so Atom Smasher can drown and suffocate .....

If Martian Manhunter TPs Obsidian and Jay Garrick, everyone is either one shotted by shadows or a speed statue.

for sure, I get that Obsidian is powerful but I don't think he ever had to defend against telepathy, I don't think Eclipso's possession counts due to something about a previous encounter they had.

1. Black Adam vs Superman


2. Obsidian vs Martian Manhunter


3. Alan Scott vs Orion


4. Dr Fate vs Wonder Woman


5. Power girl vs Hal Jordan


6. Captain Marvel vs Captain Atom


7. Jay Garrick vs Barry Allen


8. Firestorm vs Atom Smasher

1. Black Adam vs Superman-Clark seems to a much better advantage due to his feats. Whilst Adam's can be inconsistent at times.


2. Obsidian vs Martian Manhunter- I don't find Obsidian that impressive when it comes to his physical prowess, as he seems to lack some showings in that area. Overall i think that J'onn should be able to take it as Obsidian couldn't resist Eclipso taking control over him.


3. Alan Scott vs Orion- Without his Starheart i am afraid to say that he would lose.


4. Dr Fate vs Wonder Woman- This incarnation of Fate is nearly featless from what i understand.


5. Power girl vs Hal Jordan
   


6. Captain Marvel vs Captain Atom-His energy manipulation would give Billy an extremely hard time.


7. Jay Garrick vs Barry Allen
   


8. 
   Firestorm vs Atom Smasher

JLA for a solid majority. If Alan had his starheart and Fate was Kent Nelson, then they would be able to destroy the team with utter ease.