User blog comment:FairyRaven/Fairy Tail Chapter 369: The Place Prayers Reach, Review and Commentary/@comment-3273232-20140131121659/@comment-7418318-20140131142352

And Jura is lauded as the strongest of all the mages of Fiore, except for the ones not (or no longer) considered Human.

So you expected a meteor but it was "only" a rock? Isn't a meteor just that, a rock coming down from the sky?

And we have no idea how much he held back when casting Sema, since he obviously wanted the OS members (and Meredy) to survive, so crushing them to dust or blowing them a few hundred meter away would have been counterproductive to say the least. For all we know, he might be able to unleash a similar calamity as Haja did in Rave.