@mr_shazam0920: To be fair, Nappa and Vegeta consider everyone weaker than them weaklings.

Also, I may be recalling this incorrectly, they were impressed how powerful the Saibamen were due to Earth's soil.

According to Toriyama almost all the Saiyans were low-class and only 10 were middle class.

Despite the jokes that are made at the expense of Raditz, he was stronger than the average low-class Saiyan.

Raditz was an upper low-class warrior.

@mr_shazam0920: People underestimate the Saibamen only because of their appearance, but they are much stronger than King Piccolo, who could end humanity on his own.

He's pretty low class.