Ok, saw the fight on DB- I'm not completely convinced by their logic on the sword, but their reasoning is not an unreasonable one (though even then, the multi-cuts on the end shouldn't have worked, as that's much thicker adamantium than the first successful cut!).
And conversely, I will note that Wolverine has at least been temporarily dropped/KOed by a lot of cuts and such, so they went with the higher end take on the healing factor.
So they were going high-end with both parties. Which is fine with me. And that aside, it was the *visually* best fight I've seen from them.