Old Man Logan
Wolverine is old, but not weak, and manages to kill all of Hulk's kids and even Hulk.
Slade vs Hulk? I don't know, but that would be incredibly difficult. Depending on how mad Hulk is of course.
Wolverine once fought the ENTIRE marvel universe.
Slade took down some of the Justice League's most prominent members, so in this respect they're almost equal.
But then after Wolverine fought the entire marvel u, he took on Galactus.
Also, Logan's HEALING FACTOR is superior to Slade's.
Unfortunately, due to sloppy writing, I personally won't take into account Wolverine vs Galactus, or even half of what they say both characters can do. There is a HUGE lack of consistency with both characters in personality and morals, and Slade is known to change his code whenever he feels like it. Ummm... why even have a code then? Wolverine has his moments too... like when he's spontaneously acting like a total dick then in the next issue he's like some wise old fart giving great advice in a manner that doesn't reflect his personality. He should be gruff, butt not a douche (ultimate wolverine was even WORSE). Advice is nice, but he should at least say, Bub or be very matter of fact when he gives it. Not the bullshit Yoda quotes he's been spewing out lately. In fact, I'm kinda mad at comics right now. They aren't very good. Harley Quinn killing a bunch of kids... Batwing... Fear Itself... Sentry... ok seriously, wtf. It's like they just copy movies and try to make them super-heroic. Granted, here's a random thought...
LOTR combined with superheroes.
Plot is the same, set in medieval times.
Dr. Strange is Gandalf.
Captain America is Aragorn.
Hawkeye is Legolas.
Wolverine is Gimli.
Dr. Doom is Saruman
The Hobbits would probably be Spiderman (frodo), Daredevil (Sam), Iron Fist and Powerman (merry and pippin)
[I admit, the last four don't really make that much sense]
and so on.
I can do this all day.
All I'm saying is don't go based on what you've read. It's all just plot mechanics anyway, to get you to read the comic, and most of it is either unoriginal or so over the top it doesn't even make sense. In reality, the Hulk would KILL thousands of people every time he fights in the city, and wolveriene would be ripped to pieces. Same goes with Slade.
Superman is the ultimate superhero, and he ALWAYS wins, no matter what. Even when he's dead, he wins. He's fucking superman.
Thor is a GOD. That makes him way stronger than they portray him, and his powers change all the time.
Basically, I could write down the fight. I have two options: Wolverine and DS do what they always do in comics, they fight, and it amounts to nothing,
Or I could create something entirely new and do stuff you wouldn't imagine. Who gives a fuck who wins? Really, you just wanna buy the comic, and watch an epic fight. And then, the story would be carried on and on, until you turn to something else. DS wins. Wolverine wins. They both kill eachother. It doesn't matter. Because, after I write it, whether it's good or bad, someone else will come and add on to the story, and then twenty years later the work that ten writers spent all that time creating will be ret-conned and you'll get a whole new reboot.
New superheroes? New stories? New villains? New powers?
It's so rare these days it's sad. And that's because nobody's pushing the envelope. They just tell the same story over and over.
To finish, I like both characters. I think they are cool. I want to see them fight. But if it is to be written, it must be done with not only the fans in mind, but the characters themselves. Imagine you're being hunted by a world-class assassin and you happen to be one yourself. That's how it's done. They're both smart, but then again, that's almost a requirement when you got such a high body count and don't get caught. So guys, let's end the debate, have a nice beer, smoke a j, and write about it. Let's create comics... on comic vine. Then, when all of us are reading this stuff, because it will be better than DC and Marvel, we can actually do something and have a career.