You are not alone. I've been a few groups over the last 20+ years and it has been my experience that when folks go around the room talk about their experience by the time to get to me I really feel that I've got nothing compared to them I sit there horrified and ashamed of my trauma because everyone seems to have had it so much worse. This is not necessarily true but that is how you feel - you deserve the help that is available the Vet Center was a real God send for me. If you don't want to apply for compensation you don't have to but do get the help, I'm actually having a nice little life now with the help of therapy and family love something that I thought would never be possible.
Wouldn't that last statement get you a pretty low rating ? I feel the same way myself, tried groups while an in-patient alcohol rehab in the military 2X, tried a couple of of others too, won't do any more. Always gets to "my war was bigger than yours", and it probably was. I just know that God has blessed me and kept me on this earth for a reason, still not sure what that is though.