I used to think the R=U theory was about 50% true or untrue, but then we got told we weren't allowed to have an opinion so I now back it 100% by protest. The game has a pretty sucky plot without it IMO.

FFX did have pretty useless supporting roles. The difference being that with the exception of Yuna they don't show their weaknesses. Quistis gets demoted and chases Squall around, whereas Lulu is in control despite heavy losses. Selphie falls down in her opening FMV, Rikku shows her potential to control men in hers. Yuna admittedly was pathetic in all departments.