NKZero
You made good points, but a lot of them are moot. First of all, Scorpion doesn't really need armor in this MU. The only situation he would need it is to blow up straight missile. However, a good Sektor wouldn't try to zone Scorp because he has the zoning advantage. Secondly, Sektor's pressure isn't hard to escape. Overall Scorpion's d3 is his only bad poke, and that's only because of the range. His d1 is one of the best in the game. His d4 is a great spacing tool, and even though it's +0 on hit, there's a way to still get pressure. I can get out of Kabal's NDCs with d1, so there's nothing Sektor has to pressure him that hard.
Whiffed spear gets punished by the whole cast.
Scorpion has no trouble building meter in this MU. Sektor can never wakeup safely against Scorpion. Both versions of flamethrower can spear punishable on block/whiff. Tele Uppercut is easily punished, and the enhanced version is also punishable.
Plenty of Scorp's 5-5 MU are against characters that have better footsies tools like Raiden, but every advantage is also a disadvantage.
This MU is dead even.