Surfers Royale

Classic Marvel vs. DC.
Round 1 vs Sentry Superman (not prime) vs. Captain Marvel
Round 2 vs. vs. Doomsday Darksied Apocalypse
Round 3 vs. Wolverine Deathstroke
Round 4 Green Lantern (Kyle) vs Silver Surfer
Round 5 vs iron man steel
Then, using all the heroes over Hulk and Juggernaut boy super red and parallax (Halle) in a free society to end all battles.

Round 1: According to the "Superman".
Earth-2 Superman: Sentry wins.
Post-crisis (current) Superman: Sentry wins.
Before the crisis, Superman wins before the crisis.
Superboy-Prime: SBP wins.
etc.

Round 2: Apocalypse is far from being a threat or as Darkseid Doomsday, it will be hard. As for the remaining two, I think Darkseid well written (in days, before the crisis) should be able to Doomsday with one stroke of a cluster Omega.

Round 3: I do not know much about Deathstroke, but I heard a lot about his intelligence, I am opting for it.

Round 4: Unless Kyle Ion, it fails. Silver Surfer fvck him from all sides.

Round 5: I do not know much about steel.

And as for the second battle, Parallax?! From Sinestro Corps War or Zero Hour? Because if its the latter then its a murderstomp in his favor. It is a threat almost-all-powerful universal! If the Sinestro Corps War parallax, so I suppose the final winner will be Darkseid or Silver Surfer.