Oh wow. XD I was amazed by how your Luxray had a competitive Hidden Power and was shiny; I wouldn't have guessed. My Shiny Altaria (Bold) and Aggron (Jolly) were also not bred to be competitive, but I use them anyways. :P
I was assuming that your Luxray might have been Brave (+Atk, -Speed), and I was considering to do that for a Luxray I might one-day breed just for Volt Switch.