The reason its regarded the best HC for pve is because its the only handcannon that can currently roll firefly, which makes the elemental burn chain off to nearby enemies. Even if normal hancannons could roll firefly the lack of elemental burn and additional damage that it provides would still put fatebringer at the top. Your explosive round red hand has nothing on fatebringer, regardless of its stats. The scholar equally does not compare,although it is a nice weapon and has unique perks for its weapon type.