In theory if other Pokemon types besides water (mostly Fire and Psychic) had Mega Launcher what moves would be boosted by the ability?
just these moves: http://bulbapedia.bulbagarden.net/wiki/Mega_Launcher_(Ability) same moves different page: http://www.serebii.net/abilitydex/megalauncher.shtml so just use serebii's moveset calculator to see who might benefit http://www.serebii.net/games/moveset-xy.shtml
Just water pulse, dragon pulse, origin pulse, dark pulse, heal pulse and aura sphere are boosted by Mega Launcher.
Their power increases by 50% or heal 50% more.