Well it just depends on the couples you get answering. There are A LOT of people out there that don't care, you just have to keep looking till you find them.
I was very worried about it when we first started looking because I am a BBW myself, I know I am beautiful I even do plus sized modeling, but I had seen so many HWP adds that I was really scared we wouldn't find anyone. After the first few trial adds we put up adds with the BBW tag in the first few words and worded the add in a way that showed personality, that we didn't care about hwp and got many more legit responses after that.
I am the same though, We are much less likely to be interested with waif like or small women. I just always feel like I would break them or something, give me a nice size 12 to look at any day Not knockin the small chicks though- I think in the end it all evens out, there is someone out there to think everyone is beautiful. It is just a numbers game... you have to meet enough people to run into one of those that has the same beauty ideals as you.