Go with Seismic Toss or CrossChop
Nice Mewtwo, even though a Psychic attack isn't there for STAB. Flamethrower & Thunderbolt good for dealing with Skarmory & Other Legendary Birds, but, I suggest putting Psychic over Flamethrower, unless your team doesn't have a strong fire attack elsewhere.
Standard but good
I'm not a Scizor Expert, I personally don't like Scizor, maybe it's cause he's x4 weak to fire, but, hey, maybe he's great, I dunno, ask someone else on this one
if he has been batonpassed in he is deadly.
I would strongly recommend putting Outrage on him, it's a VERY strong attack.. But then, you'd need a miracle/bitter berry or have safeguard in affect while using Outrage...
Go with Tyranitar all the way...
I like lanturn... Gotta have Surf & Confuse Ray on him... If you were feeling fortunent, you could make it rain, then surf, thunder, and just confuse ray... But, this moveset you gave seems alright...