To settle this easily.
Who can keep up with Supermans, Captain Marvels, The Flash & Martian Manhunters speed?
Not many.
So lets just say Marvel have a tonne of heroes ready to fight.
Most of DC Batman, hawkman, Hawk Girl, Wonder Woman etc etc just stay back.
All of the fast DC heroes take off and knock out 80% probably more of Marvels team before they can react.
Spiderman
Jean Grey (telepathy yeah it could beat a lot of heroes...if she was fast enough to aim it)
Cyclops
Gambit
Basically all the xmen get knocked out.
Note: The only hero I believe in Marvel that could take out Superman is Prof X but again easily knocked out.
After this fight I would say Marvel had
Hulk & Thor left
Unless we're counting villians which if we are then DC has Darkseid - Doomsday - Amazo(who copies & pastes ANY super power) and a whole bunch more.
So if we include some more villians from Marvel that might have survived Superman, Darkseid, Doomsday, Flash, Martian Manhunter, Captain Marvel all attacking at once.
Dc would still have Batman, Wonder Woman, Green Lantern, Green Arrow, Black Cat, Grundy, Joker, Aquaman and a whole bunch more.
Basically
The most powerful heroes & Villains from DC vs Marvels = DC wins easily.
Marvels heroes are generally mutants, super-humans or humans with high IQs & combat ability.
Also I believe Batman could easily take on someone like Daredevil he could probably take on him and Elektra at once. Batman once fought agaist Karate Kid or whatever his name was but he was from the future and knew every martial art in the world and could counteract it. Basically he was Neo...Batman beat him.