You are right, they are all the same level of difficulty... This is because the position at which you set your expectations changes with respect to how well you can sing the song. If you decide to tackle a song hat's too hard, you don't expect the same outcome. I think listening back changes that, because I have listened to this cover enough to become unsatisfied with the sound.
Thanks Ron
I was thinking of doing 'hurt' with my bass voice, but didn't want to have to record guitars :/
@Forest: I have a full voice recorded range of Eb1-E5 and people say you cannot drag chest past a certain point before you are MIXING at least... I have never felt mixing or head voice or anything like that, but maybe I am using it.... If so, then my problem maybe just the sound I am getting... Maybe the sound isn't piercing enough to make me satisfied.
I don't know, it's beyond my knowledge what my voice is doing, I just sing.