if u where a person playing wow and wanted to try ff11, u will mostly think its too complicated, annoying and stupid, if u are a f11 player who try wow, u will think its stupidly easy
ff11 is simply for pure hardcores, no one comment on that plz, square IS a rpg maker, the game as all is made on rpg princicple, u want exp? u kill mobs simple
in wow the controls are much easier, thats sometimes the first reason why ppl like it, its simple, thats big thing by itself, wow got talent trees, and as u lvl u can discover the character and try diff combination, wow's true gaming start in the end-game, raids, yea sure some might say instances pvp etc, if u wanna play the game for pure pvp, u got it but u have to lvl a bit, u want pve? instances teach u how to play, but ur goal is the raids at lvl 70 atm.
if u wanna be interested in the game read its story, its a bit hell its too much bigger than ff11's, three games and several books, thats more than enough for a foundation for an mmorpg world :P
give it a try, at least reach lvl 30 where u have some spells and u can go to some interesting instances as a beginning, its not the dunes in ff11, its not party oriented ( anyone who played ff11 would know that u cant lvl without a party, u wanna solo? u will reach the highest lvl in a year and a half)
wow can be soloed to 70 or done by grping
u got more choices, but the game has its disadvantes and weaknesses