The only thing I thought was a little peculiar was that they gave you Golem (assuming you buy it in the WoB) with Stop at a rate of x5, yet when you get Fenrir in the WoR after the Phunbaba fight, Stop is at a x3 and X-Zone is a x5.
That one made me scratch my head. It would've been redundant to give Stop a x5 with two different espers, but why make it slower to learn than X-Zone with Fenrir?