I mean, you got one group of sociopathic alien conquerors and another group of sociopathic alien conquerors.
I don't think it takes much to understand that they wouldn't exactly work like peanut butter and jam, more like tabasco and pickle juice.

I dunno, he'd probably see saiyans the same way Frieza does, filthy monkeys. Sure, they're a step up from humans in terms of methodology, but they're still a pack of savages.

They did get conquered and wiped out pretty easily. Though I suppose they can bond over being dads.