In Frieza's mind, Su Xin was far more hateful than Sun Goku. To increase the chances of killing Su Xin, he was willing to temporarily set aside his grudge with Sun Goku and settle it later.
"Sun Goku, aren't you self-proclaimed as a good person? Su Xin brought us four powerful beings to Earth to battle, killing countless Earthlings, which surely included some of your companions. Why are you still siding with him? You're an accomplice! An accomplice to the death of countless Earthlings!"
"No, it's not like that!"
Sun Goku retorted, "Su Xin helped me enhance my power twice and assisted us. He could not have intentionally caused the deaths of so many Earthlings. The ones who truly killed them are the four of us!"
Frieza persisted in persuading:
"All three of us have grudges against Su Xin, and you've had your strength enhanced by him. Then he placed us on one planet. Doesn't this clearly show that he wants us to fight each other?"
