Carlito was a main event world champion in the Carribean at a young age. However, this was for Carlos Colon's WWC promotion. He made it to the top by having good talent to be a mid-carder and having a father push him to the moon. It's like Greg Gagne in the AWA, except people kept Verne Gagne from puting the strap onto Greg.
Carlito does not have the patience to work hard and reach the top because he got used to having the strap given to him by his father in WWC. He'll never make it to the top in WWE, or even TNA should he ever wind up there, simply because he has too much of an ego and not enough of an actual person to back up said ego.
I get the feeling Carlito would not be happy anywhere about anything with anyone.
He bitched about making out with Trish and Torrie.
What does Carlito have to be frustrated about other than his lack of talent, his boring character, or his lack of charisma?