Actually, you DO get 2 exp per step. I'm not sure how you tested it, but I had 19/88 health and took three steps, gaining 6 exp. <3 You probably took one step and thought it counted for two, hence seeing a gain of 2 exp was correct or something...I tried this out. It does not work. :/ 1 EXP per Step, unfortunately.
That's awesome. o-o; I tried using it by itself and I was still gaining exp from using it, though, so I dunno if that's exactly what it does. If so, then why not just kill one guy who gives a bunch and just spam Victory Pose >.>It gives double the exp from the last enemy you killed. Well, I think it's double, anyway.
Also, what level was everyone when they finished the story mode (which difficulty?) with each character? :O
I leveled my Terra to 30 out of terror, so I brought Ven and Aqua to the same level for their respective stories. Aqua stayed 30 through the end of the last episode, too. Critical.