Poor Thor.. Yeah, I can definitely see why people feel bad for Loki- being lied to for a few centuries by a parent who seems to make his offspring preferences pretty (*cough* blatantly *cough*) clear can definitely do some damage.
But how often do we stop for a minute and think of all the crud Thor's dealing with? Not only is he under pressure to be the 'perfect' child, he's also bonded heart and soul (take that in whatever way you want) to Loki- the one person who's so desperately needing Odin to love him that he can't wrap his mind around the fact that Thor loves him enough for their father and himself besides, no matter how many times he's rejected.
*cough cough* Sorry.. Just came down with a bad case of Thor feels, I guess.
Adorable art! I totally agree with KittyLove- this is pretty much the movie in a nutshell.
I don't think Thor would have really felt like that in Thor though, because, well look at him!! Though I expect he got more confused towards the end - how could Loki change so much? But I totally agree with you in the Avengers: all the power Odin used to get Thor to Midgard and so much resting on his shoulders...and that moment when Loki traps him and he realises that he's not the same brother anymore...