Ghostrider, you can only kill him with holy, as in blessed, artifacts or by killing him in his human form.
In his burning skeleton form he can take down Scorpion with ease.
Ether he fries his soul or just butchers him.
What you have to keep in mind is that Ghostrider can kill anything that has a soul and has done evil, he can even kill angels, since he himself is one which means demons can't kill him.
The rider went toe to toe with World War Hulk, and it was made clear that he was the more powerful being in that fight, it was only due to the Hulk wanting revenge that the Rider left the fight.
Twitchythe3rd wrote:Seeing how Ghost Rider is still technically human, i'd give it to Scorpion.
Killing Scorpion just sends him back to the Netherrealm, free to escape again for Round Two.
When Ghostrider dies he goes to hell, from which he has escaped before, ready for round two.
Ghostrider takes this fight.