i'm pretty sure i've read that bills is the weakest of these universal gods. also, he is apparently weaker than whis "His power surpasses that of all the main Dragon Ball Z villains: Frieza, Cell, and Majin Buu.[11] Going further, V-Jump notes that Bills is without a doubt the strongest being in the history of Z.[5] However, this is disproven in the film when Bills reveals that his martial arts master, Whis, is stronger than him." it's from the wiki, but that's the best i can pull and it's info is from the movie.