Just check any Super Smash Bros. balancing discussion in any gaming forum and you will find rumors that Smash Bros. producer, Masahiro Sakurai, gives his own characters from other games (i.e. Kirby, Pit, Meta Knight) preferential treatment by ways of stat boosts. Writing with the Weekly Famitsu, Sakurai faced these allegations with simple reasoning:
First off, what merit is there for me to play favorites with characters I worked on?” he wrote. Sakurai went on to note that Pit from Kid Icarus is in fact one of the characters he has trouble using in the game. “To bring up an example, two characters I have trouble with and can’t use very well are Pit and Palutena. Therefore, for me, I feel that ‘Pit and Palutena are weaker than the average character.’ If I were to adjust them to fit myself, they would become even stronger – but as you may notice, I haven’t.
Sakurai went on to discuss how someone on his team is given the task of checking fighter balance, and while things are never perfect, fun over balance is the main goal.