I'd say Omega Red for the majority. I mean Logan has trouble cutting through Red's carbonadium armor...so doubt Daken's muramasa tinged claws will do to much damage, besides, Omega Red relies more on durability than hf so the muramasa won't affect him as much as say a healer ala creed or logan.
1) no, he can't slice off the tentacles, and if he tried, he'll just shatter muramasa claw
2) ok, Daken CAN sneak up on arcady and one-shot him with magic claw...
3) i'm still giving the edge to Rossovich
His armor is highly durable, yes. But it's not made of carbonadium. It WAS made of carbonadium in the 90's cartoon, though
Muramasa doesn't cut things. It splices them on the molecular level. Daken was supplied with these adamantium sheaths, though... so it seems they can't "cut" through anything...
I don't think they'll fight in the upcoming issue (although I wouldn't mind being wrong). I guess they'll just run into each other at the end of the issue or something.
Would be an interesting fight.. it depends on how the Muramasa perform against Red`s tentacles and armor. However OR is still strong enough to tear Daken limb from limb since he has no adamantium skeleton.
Unless the claws can cut the tentacles with ease I give OR a majority.