Solid team you have here, I really like seeing other people use Sub Dragon Dance Gyarados. Now looking at your team, I can see Choice Specs Tornadus-T
, one of the strongest forces in the new Black and White 2 metagame, as being a major threat. He outspeeds your entire team and no member on your team has the special defense to take Specs Hurricanes. Scizor can hit it with a CB Bullet Punch, but can't OHKO with the Tornadus-T's improved defenses over its incarnation forme. Another threat is Volcarona
with Hidden Power Rock. After a Quiver Dance, the moth outspeeds and OHKOs every member with Stealth Rock up. For these threats, I suggest replacing Reuniclus with a Choice Scarf Terrakion
. Scarf Terrakion is one of the best revenge killers in the game and gives your team some much needed speed. He's able to dispatch of Tornadus-T and Volcarona with Stone Edge, outspeeding the latter even after a Quiver Dance. Scarf Terrakion also serves as a great cleaner after Gyarados and Dragonite have punched holes in your opponent's team due to his great Fighting/Rock STAB combination.
Now for some smaller changes. First, I agree with Expert Physics suggestion of Superpower
over Brick Break on Scizor. The OHKO on Ferrothorn is critical to prevent it from stalling you out with a combination of Leech Seed and Iron Barbs damage if you opt for the weaker Brick Break. Superpower also gets the OHKO on Heatran who would otherwise wreck Scizor with its Fire STAB. Superpower also hits Chansey and Porygon2 harder who would otherwise prove troublesome due to their bulk. Next I would suggest Bounce
over Stone Edge on Gyarados. Bounce provides better coverage alongside Waterfall and is also backed by STAB with a paralysis chance. This change allows you to get past Virizion and Ferrothorn who would otherwise wall Gyarados.
Hope I helped and good luck with your team!