1)I have a Groudon my friend has a Kyogre, would it be more effective for me to use thunderbolt and exploit Kyogre 2x weakness to it or use earthquake and get stab, which would do more damage?

2)Who is the better spiker, Glalie or Skarmory, id prefer Glalie as he could also be my dragon killer but which do you think is better, and any possible movesets would be helpful