Revisionist history: If Cott had beat Margarito, is Pacquiao the same star?

I know this is all hypothecital, but hear me out. IF Cotto had beaten Margarito, all signs showed that De La Hoya would've fought Cotto. But of course Margs beat Cotto and that fight was out the window. So instead of fighting Marg, De La Hoya chooses Pacquiao. Pac proceeds to batter Oscar and a superstar is born. Pac then goes on to destroy Ricky Hatton and win a WW title against Cotto. So IF Cotto had beaten Margarito, would Pacquiao be as big a star as he is today? If no, why not? If yes, how? Please also include what YOU think may have happened IF Cotto had won. I know this is all what if, but entertain the question.