He'll Win, But It Will Be Hard Because Of Jubilee, Dazzler, Mr. Zsasz, Vision, Toad, & Martian Manhunter.

Avengers:
1. Vision
2. Wonder Man
3. She-Hulk
4. Pulsar
5. Living Lightning
6. Sentry 
7. Lionheart 
8. Crystal
 
Vs. 
 
JLA: 
1. Black Lightning
2. Red Tornado
3. John Stewart
4. Firestorm
5. Doctor Light II
6. Manitou Raven
7. Manitou Dawn
8. Faith
 
Match-Ups: 
1. Vision Vs. Black Lightning (Winner: Black Lightning)
2. Wonder Man Vs. Red Tornado (Winner: Wonder Man)
3. She-Hulk Vs. John Stewart (Winner: John Stewart) 
4. Pulsar Vs. Firestorm (Winner: Firestorm)
5. Living Lightning Vs. Doctor Light II (Winner: Doctor Light II)
6. Sentry Vs. Manitou Raven (Winner: Sentry)
7. Lionheart Vs. Manitou Dawn (Winner: Manitou Dawn)
8. Crystal Vs. Faith (Winner: Crystal) 

...He Started As A Villain. 

Iceman 
Jubilee 
Surge 
Sunfire 
Dazzler 
Mimic 
Pixie 
Rogue 
Psylocke 
Changeling

'Nuff Said.