DC Wins:
Strength Benchmark - Supes is the strongest there is and outlifts Hulk or Thor
Speed Benchmark - C'mon. Flash vs... Quicksilver. No contest.
Invulnerability Benchmark - Again Sues leads the way in this catagory.
Magic Benchmark - Marvel has Doc Strange and Scarlet Witch. Most of the rest just come by earth every now and then. DC has Zatanna, Doctor Fate,and several other resident Maficians.
Raw Power Benchmark - DC heros are generally way higher powered than Marvel.
Marvel Wins:
Mental Power Benchmark - I'm not sure who is more powerful Gorilla Grodd or Martian Manhunter, but neither can hold a candle to Prof X, Jean Grey, or any other Marvel telepath.
Regen Benchmark - Lobo may be unkillable and regen back from anything, but so can Wolvie, Deadpool, and quite a few other Marve Heros AND Villians
Dexterity Benchmark - In DC, Nightwing is considered to have the best agility. Marvel has Spidey, Nightcrawler, the Beast, and many more who should be able to tumble rings around him.
Smarts Benchmark - DC has Batman for Detective work, Lex Lutor for science, and Gorilla Grodd.When they need Scientific Help, they turn to STAR labs. Marvel has Mr. Fantastic, Tony Stark, the Thinker, Herny Pym, and many others. When they need science help they turn to themselves.
Leadership Benchmark - No one can out leadership Captian America, no one. Then follow behind with Cyclops, Storm, The Red Skull, etc. DC has Supes.
I know I did not list all of the possible contenders of each, but I can't recall everybody.
As for the Stealth Benchmark - I couldn't decide. DC has the Bat family, Black Canary, Catwoman, Deathstroke. Marvel has Spidey, Daredevil, Elektra, Psylocke, and a whole host of Ninjas. I couldn't decide.