That all sounds impressive to me! (But I suppose you're not trying to convince me!) You might be overthinking it. I don't know how quant-heavy the programs you applied to are, but that can be a big deal or not a problem at all, depending on their perspective and your research interests. I got the impression while talking to departments last summer that some expect lots of quant preparation, some don't (but will expect you to jump on and learn fast), and some don't care very much, depending on your area of interest.
I have an MPP (undergraduate in political science) and several years working in the area I'm interested in studying/researching, and while I feel like that experience has focused my interests (confirming what I'm interested in, giving me experience with the practical implications/limitations of my research, getting a break from the onslaught of Grad School Part I), I worry now that I've tainted myself a little bit by getting into the hands-on application of research and not focusing on just research...