So, after reading their profiles, I might give this to...let's see:
First, yes, The Mortal Blade can kill Scorpion, bypassing his defenses against death like Regenerationn and etc, however, in my opinion, this is overestimated in these types of battle, and I'll tell you why: both fighters here are lethal characters by default, like Dante and Vergil from DMC, Zabuza from Naruto and Samurai Jack, they normally use swords/guns in combat which normally kill their enemies, they only need to hit them, and that's Wolf's problem here, the Sword can kill Scorpion, yeah, but this isn't a ranged passive hax or something, Wolf needs to hit Scorpion, making this scenario not that different between any sword fight, one clear slash, you're dead, but it's hard to land that slash
With that in mind, we must consider another factor, Scorpion's fighting style is specially complicated, thanks to his Teleportation and Intangibilty, and his durability is also a problem since he have a good AP advantage
But Dante, I'm sure Wolf also have Teleportation
Yes he have, but there's a difference between having Teleportation and having a fighting style based on it. If you read the comics, you'll see that Scorpion usually surrounds his enemies with attacks that are mixed with his Hellfire Teleportation, and considering that one of his main attacks in MK11 comes with Intangibilty, Wolf will have problems on landing a hit and that by itself makes his Immortailty, Regenerationn and Resurrection not thaaaaaaaaaaaaat useful, but please, I'm not saying that they doesn't matter, it's a matter of fighting style. And while Hanzo doesn't know about this ability, he's not like Dante or Deadpool, who relies on their Regenerationn to sometimes get hit and suprise their opponents, Scorpion doesn't do this, he'll try to avoid any attack. Also, Wolf will have problems to keep up with Hanzo, his Enhanced Senses apparently are for seeing in the Darkness, which doesn't help him in this case
BUT, there is a problem for Scorpion, while his fighting style makes him able to fight against Wolf, this Shinobi is also someone really hard to kill going by his profile, since...well
Resurrection, Immortality (Types 4 and 8: Bound by the Dragon's Heritage and will resurrect if he is killed. If he were to be killed several times, the Dragon's Heritage would steal a person's life-force in-order for him to resurrect without using too much of the Dragon's Blood.
Scorpion can kill Wolf in many different ways, since he have a good AP Advantage and Wolf doesn't have Regenerationn, but he have some interesting Immortality feats, that are similar to Hanzo (Both of them have Type 4, and Type 8 is probably even more broken), so yeah, Hanzo can't kill him with normal attacks, Hellfire, Swords, Penguins, doesn't work, buuut yes, you guessed, BFR might work. It's basically the only thing that Scorpion have to win this fight, and it is in his character to use, it's not his first move, but he will use.
But we have some different scenarios, if he kills Wolf before any BFR, he'll know that he needs this to end him, if he uses first, congrats Hanzo, you won, and both of this scenarios are on passive danger of getting hit by Wolf's Mortal Blade, and then GG
See ? Inconclusive it is