but it seems like they can also be wrong, seeing they list Demon Lightning Hammer at 16 uses of the 2 skills needed. However it more accurate than the FAQs here (they copied from the official strategy guide, who's pretty bad by itself) --- Grand Marshal/Gladiator Priest, Lightplol. PvE gladiator holy paladin, Lightp.
Blame the devs, strategy guides usually aren't made by the game company and like you said they don't share that information.
Usually it's a guy(or multiple) who plays the game 1-2 weeks before release and write the guide from that. So yeah in big games like Tales guide are lackluster and wrong.
The only way we have to really know everything about a game is hack the discs and read the data there, it's been done for really popular games (like some FF games). --- Grand Marshal/Gladiator Priest, Lightplol. PvE gladiator holy paladin, Lightp.