What would Jellal do for strategy though?i guess instead of beforehand, one could say in the midst or early stages of the battle. They will most likely be feeling each other out before going with their best moves.
THAT is when Jellal, as i believe, being the better strategist, will provide the difference. A potent spell, set up early on.
I'm pretty sure Laxus will aim to make it CQC, while Jellal should aim to keep it ranged. There'll probably be small momentum changes through the fight, where someone dictates for a short time.
Jellal or Laxus probably don't have enough weaknesses for strategy to be much of a factor. Jellal will probably try to do more "hit without being hit", and Laxus will try to "slug it out".