ever since becoming a senator Pacquiao has lost his fans so he's scared of a rematch with a poor fighter
I don't think he's afraid of a rematch, the pacquiao I know is courageous enough to withstand any fighter of thus current generation so this is false, he will definitely make amends against this guy should the rematch happen.
Of course we already know that Pacquiao won't back down to any fights. He is cancelling the fight because of his duty. I don't know what this guy is talking about. Pacquiao also proven that he is willing to fight bigger guys and Horn is no threat to him. He has beaten that kid, but because of the judges, he lost it.