Mainly due to a plot device . Angels are very powerful and the planet roasting part is a big deal as it was going to be roasted because of two angels fighting,yet it should be noted that the planet would still be there due to the fact satin wants to rule it.
I shouldn't have to tell you that goku has nothing on a reality wrapper,mind raper,soul raper,time manipulation, and his true form will burn goku's eyes out just by goku looking at him. They are planet just by standing on earth . Reread this entire discussion.