Going out in jamaat instead of leading taraweeh

I would like to find out as to whether going in jammat for spreading dean is a more stressful venture than performing of taraweeh, i have a friend who is a hafiz and an aalim but every year some excuse comes up with no justification he doesnt want to read. yet when jamaat comes and going out in jamaat is as easy for him as any simple task. i get really upset with him because i ask, if he is stressed out to read taraweeh in front of just the congregation , how is it possible that he will not be stressed out when allah ask him about spreading deen? can you comment