Fraxel Laser Treatment did not work for me, what gives?

I had Fraxel laser treatment last week and I feel like I got ripped off. I look the same. Yes, if I take an after photo with better lighting and a big smile I look better than my sad before photo. But why the sam heck would the procedure work better for some people rather than others? That is just not fair!

MysteryM2007

F, 33, New York