Right, because Saiyans were well known for having an Earthling woman they worshipped like a deity and learned all their martial arts from despite being several times more powerful than her. Also she invented the Galick Gun instead of Vegeta... Because. I know skill a thing but it doesn't just completely invalidate power levels, especially when the difference is that huge. Otherwise Goku should have beaten Frieza no problem because he trained all his life while Frieza at that point never trained a day of his life. But whatever, I'm not the one in charge here.