Sorry for misunderstanding but... I'm not sure at which point leading up to his surrender either he or Vader nearly gave in to anger. So, perhaps you can understand my confusion. Secondly, and this applies particularly to Obi-wan - and I'm sorry to have to repeat myself in this - what is so 'logical' about what Obi-Wan and Yoda believe? Obi-Wan has seen with his own eyes (and Yoda has either done so or has already intuited the truth of the situation) Anakin/Vader cut down many Jedi in the Temple including - let us not be squeamish here - children. He has watched as Anakin/Vader throttled his own wife (carrying his unborn child). And, where is Alderaan? Oh yes, that's right it was destroyed, along with all the beings on it, by the Empire's Death Star. Just another day at the office for Vader. How is Obi-Wan (particularly) supposed to intuit the good man that was Anakin within those actions? In what way is Obi-wan's view a coldly calculated, scientific proposition? Luke has not been witness to those deeds, he has an idealised view of his father. That disappears on the second Death Star. I don't think Luke's pained cries for help can be considered faith, more desparate hope. Why beg someone you believe to be good to do the right thing? And, as for Qui-Gon being more intuitive? He did not sense what Obi-Wan did entering the fray at Naboo. And his decisions regarding Anakin were to do with following a prophecy.