YES! Finally someone who shares the same opinion! I would even go far and compare FFTSW with FFX, where you go on a journey to help a summoner to end this huge evil entity. If we thing of magic as science - "Any sufficiently advanced technology is indistinguishable from magic.", Arthur C. Clark - so yes, in that case Aki was kind of a summoner.

Unfortunately I don't know much of FFX because I hate that game.