Let's do this
Attack Potency:
Scorpio. Even if Cinder gets upgraded to City Block level+ she's only 66 tons to Scorpion's 100 tons. Plus he vaporizes people on his level with his hellfire. Combined with being stronger while he stays in the Netherrealm he can surpass Cinder's power
Speed: It's equal.
Durability:
Scorpio. His resistance to Cinder's only element, fire, should further reinforce this.
Hax: Me and Kredory are still trying to find statements or proof that Scorpion's hellfire has unique properties from normal fire besides usually vaporizing people or Scorpion repeatedly saying "YOUR SOUL WILL BURN". Maybe Havik stating that Scorpion's hellfire will burn Hanzo and give birth to Scorpion is proof, since they are just separate beings and could possibly mean that Hanzo's soul will be obliterated and Scorpion will take over. For now, no one has this advantage.
Lifting Strength: Doesn't really matter here tbh, but if it does,
Cinder takes this.
Stamina: Both are equal.
Range:
Scorpio. His spear managed to catch a fast moving helicopter, and said helicopter is similar to a Chinook CH-47 which can move 87.5 meters per second so his spear would reach a hundred meters since that thing was moving really fast and he still caught the chopper pilot. His teleport is on par with Raiden who can teleport from realm to realm (realms are planets btw) so he can safely teleport away from most of her attacks which are only dozens of meters in range
Abilities:
Scorpion. Cinder's abilities focus on fire which Scorpion resists, while she can still make weapons, he still has instant teleportation and BFR over Cinder. His teleportation makes him harder to land a hit on and can activate it without lifting a finger. BFR isn't something he'd start with but if he uses it, his strength will grow and surpass her power. Let's not forget that Cinder uses magic at this key, and magic users become weakened in the 5th plane of the Netherrealm which is where Scorpion will send her.
Skill: I may sound biased, but
Scorpion takes this tbh. His feats include defeating and killing Bi-Han who killed five immortal gods, raided and defeated (or killed) an entire army of Shaolin Monks, defeated Quan Chi and Shinnok (take note that QC wasn't a jobber in the OG timeline) and this was done all by himself. Scorpion was only killed once by Bi-Han since him killing him twice when they met in MK:Mythologies was retconned, but Bi-Han fighting Quan Chi and Shinnok wasn't since Raiden referenced the battle in MK9. Bi-Han is weaker now since he doesn't have those things that powered him and helped him fight those gods but his experience still remains intact.
Scorpion takes pretty much most of the advantages so I give my vote to him.