Yajirobe was legit a monster at the end of classic Dragon Ball. When he was introduced in the Piccolo's arc, he was shown as someone who's almost as strong as Goku.
But on the other hand you have Mr Satan, who was sacred "strongest man alive" even BEFORE he won against Cell, despite the world having seen the fight of Goku against Piccolo. Since then, he has, of course, saved the earth against Cell, and then he gained the respect and friendship of Buu, a fuckin monster born in order to destroy the planet earth, and he was the one who saved (once again) the earth against Kid Buu, asking people to gave their vital energy to Goku. Oh and did I mentionned that his daughter is married to a saiyan ? Fucking legend.