I have written down every character I have faced and how many rimes i faced them and why I lost or won just too get matchups written on paper so I can study them so I can better my strategy. Out of around 250 matches here's my numbers.
Numbers in parenthesis is the number of times I encountered a character. Numbers to the left are how they rank in encounters 1-24.
1. Deathstroke (31)
2. Flash (24)
3-5. Nightwing, Green Lantern, Superman (tied 20)
6-7. Batman, Green Arrow (tied 19)
8. Harley Quinn (17)
9. Shazam (16)
10-13. Aquaman, Catwoman, Doomsday (tied 15)
14. Joker (13)
15-17. Grundy, Bane, Raven (tied 10)
18. Black Adam (9)
19. Hawkgirl (7)
20. Sinestro (6)
21. Ares (5)
22-23. Killer Frost, Lex Luthor (tied 3)
24. Cyborg (2)
I was playing as Hawkgirl, Sinestro, Doomsday and Cyborg.