Lol thank you, plus the fact that while Ninjask is in battle it has power up moves. So it sits there and keeps bossting its Baton pass. It works with any poke, just Tyranitar is the topic here.

In case someone needs help figuring out a good combo, this is what I had

NINJASK @ Leichi Berry (I think thats the berry)
Speed Boost | Jolly

Substitute - When this works it is amazing, if you can get 2 turns out of it for a DD you are set.
Dragon Dance - Highly Reccomended for Tyranitar passing
Agility/Double Team - If you dont want to use DD you should either Boost Spd or Evasion
Baton Pass - Uh DUH lol

If your sub can hold for 2 hits you are set

Turn 1 Sub
Turn 2 DD
Repeat till you hit the 25% mark with Sub and then Baton next turn. This strat pwns. The only way they will stop you is if they predict it and get a OHKO on Tyran when it comes in, if not it will sweep like a beast.

I think that rock slide is better because its a STAB move and if your faster
you can make them flinch with 30% chance, it also has more pp than stone edge does. But stone edge would work too, because its stonger and you can get a better critical hit with it too, but its only 80 accuracy and that means more missing for that move.
I think it work better on slower pokemon and it could work with fast pokemon as well. Rock slide is better in my opinion, because more accuracy,STAB,and 30% flinch.

I say there both good attacks