Who is a righteousness person - Kumbhakarna or Vibhishan

Guys this question has bedazzled me for a long time, I really want to know what all of you think about it . .

who do u think is a righteousness person - Kumbhakarna or Vibhishan ?

Vibhishan

Who tried to explain ravan the significance of RAM and SITA and hence was abandoned by Ravan . He found peace at the feet of Lord Rama , as he knew Lord Ram was right and his brother Ravana was wrong. He stood by truth over relations . His Dharma was truth .His loyalty was towards right/truth.

Kumbhakarna

Who knew Ravan was wrong, who told Ravan in face that ravans deeds were wrong yet he fought for Ravan and Lanka. He knew he was going to die yet he went to the battle field. He considered his prime duty to be being dutiful to his elder brother and his kingdom even if they are wrong .This was his Dharma to stand by them when they needed him even though he did not agree with Ravans deeds. His loyalty was towards duties imparted by virtue of birth .

Given this - now if you had to chose between Family/ Friends who are not right VS the Truth l what would you have done ? Imagine you are in the above situation whom would you have supported would you fought for Ravan your elder brother as your duty as a younger brother is to obey and respect him OR would you have supported Ram who is right conventionally yet is on a war with your Brothers and kingdom ?