Eh, when you say "hey, the things you do are going to have a dramatic affect on the story" but they DON'T have a dramatic affect on the ending...maybe you fucked up a little bit?
Again: loved the games, had a lot of fun, but I was also disappointing that decisions I thought would matter wound up being relatively meaningless.
Not trying to say your experience playing the game wasn't valid, just that it might not be the best example to point to since that was a rather noteworthy example of what NOT to do for many people.