I don't buy the whole, Fuerte isn't good, thing. I think the reason he's so low on the tiers list is cause very few people bothered to use him. He's got the best mind games of any character, and his ability to bait and punish is insane. While his normals aren't the best, his RSF loop mixups are deadly. With all my experiance against Fuerte (More than any other character, lol) the only character I can win with, semi-consistently against him(yours) is Ken. lol
TL;DR
Fuerte is awesome, people are just to lazy to use him.
In my opinion, Cammy is currently the worst character.