i think you mean, "Is Blayne Biondi cooler than Richard Kirtley?"
To answer your question, it is an opinion and there are no hard facts stating who is cooler than who. But I know someone who definitely thinks Blayne is cooler. :)
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yes they are brothers because if you have dbz budokai tenkaichi there is a skill you can unlock called friezas older brother and when you fuse it with the hatred for saiyains skill you get cooler so that proves cooler is obviously friezas brother. Also they mention it briefly in the movie when cooler comes.
The song is called "Cooler Than Me" by Mike Posner.
sam
freezas older brother
A YouTuber Who thinks he is cooler then Kool-Aid Man