Thanos and Team vs
Thanos
He commands the Green Lantern Core (just the green lanterns no guardians or ion or whtever else)
He also gets Quasar (classic), Zod, and High Evolutionary as his generals (and their usual resources)
VS
Depowered Tyrant
He Commands Omacs of equal amount to the Green Lantern Core. (They also have Brother eye)
He gets Wonder Woman, Doom, and Batman
Both Team get 48 hours to prep
They fight on a indestructible earth like planet.