Thanks for the credit araknyd, much appreciated! But yeah, omg after seeing this video, sub zero has some killer ass combos, better than scorpions i believe. The freeze looks like its gonna do wonders in this game, especially the enchanced freeze, named the Ice Beam.
But now, onto the story. What i think is what Shawnbronald said, they probably changed the storyline after announcing sub zeros character. It made sense for them to do this, because of a variety of reasons.
The first reason being what would they do with younger sub zero then? Turn him cyborg? **** NO, that would ruin such an iconic character, more people know about the younger "good" sub zero than the older brother, mainstream fans i mean, not us hardcore ones, so there probably would be intense fan backlash for ruining a character people, including me, have come to love. Leave him out of the game completely? Again, no because of fan backlash. Include 2 sub zeros in the game? Could have worked but i think it would have ultimately been a waste of character space, i wouldnt have minded that, but still, its not the smartest approach.
Another thing they probably realized is that if they eliminated older sub zero, there would be one word: NOOB. Now its easier for NR studios to put Noob in this game because of the older brother's death. And to keep both younger and older sub zero fans happy, they made younger sub more dark and out for revenge, sort of a combination of both sub zeros, which i say time and time again was the best move on NR studios' part.
So yeah, i have come to a conclusion that this is INDEED younger sub zero, scorpion also saying "AW HELL NO, YOU AINT SUB ZERO" helped support that fact as well.