I was battling Marlon in the World Leaders in PWT,He had a wailord and a Jellicent, I had a lucario and a Electivire.Wailord attacked FIRST ?!, since he is a slow Pokemon how could he ouspeed my electivire and lucario ?
You might have had a Speed hindering nature and less IVs.
Possibly an item like quick claw, or a glitch.