Deathstroke has 1 day to prep, with basic intel on Logan. Deathstroke is allowed to jump Logan and start the fight, but not by, say, dropping a nuke. Who wins?
A day of prep + 90% of his brain, when Logan all too often uses 10% of his, means Slade drops Howlett.
However, Wolverine as he is often portrayed by Aaron & Remender (Manifest Destiny arc and X-Force Logan to lend a few examples) might be harder than surmised.
In any case, a prepped Slade only really needs a powerful magnet. Lol.
Similar battles have been done before.
With a day of prep however, I'd say Deathstroke should take it. He's pretty smart, and he's nearly superhuman in his physical attributes, most importantly speed and reflexes, and the prep would allow him to tailor his gear to fit his prey. He's also had a little experience with regeneration in the New 52, even if it was written by Rob Liefeld, so he might have some idea of what to bring to the table to even the odds or disable Wolverine.
@DeathstrokeMerc: No only I can be me. Stop it, stop it right now. Go be deadpool or something.
I hate to break it to you but here it is. You're a clone. Cadmus is cloning an entire army of me. They're called the Clone Army. Also a spaceship the size of a moon is being named in my honor. It's called a Death Star.
.....people who think deathstroke "stomps" in a random encounter clearly need to read more wolverine books...
But I think they're intimating he 'stomps' with prep. Least I hope so.
But y'know what? Wolverine with prep wouldn't have too hard a time putting most folks down either. His stealth is second to none, and his claws can cut just about anyone and anything. Put the two together + prep = dead just about anyone.