The position # matters very little. The move # matters a lot more. Move 1 will always > Move 2 unless the Move 2 ninja has 10k more init than the Move 1 ninja (And move 3 would need 20k init, move 4 30k init etc.), but why would u ever stack like that. If your init with 4.5k is a lower move # than your opp's 3.3k init ninja, then the 3.3k move ninja will always go first. I assume when you say "use skills at the same time," they are both prompts. If one is non prompt, the prompt will go first regardless of move # and init (although i think if you have like maybe 50k more init, ur non prompt skill might go faster ). Hopefully this answers your question.