I just found this thread. You've spent over a year querying? Wow. I really admire your consistent courage and determination.
BTW, what would be your projected conclusion on your success so far (based on your original hypothesis in the experiment?-sorry I'm a science student).
Thanks, Darzian! Sorry I took so long to reply. My projected conclusion is that assuming my story doesn't suck, I queried at a time when the market was too tight, regardless of how much heat level I packed into the story/query.
Since I'm unpublished, period, I don't have any credentials either. During the first six months I queried, I noticed very few debut SFR authors (count 'em: one), but suddenly I'm noticing more sales by both published and debut authors. Not tons, just a handful, but a lot more than when I began querying.
Now even if agents didn't think my query was worth squat, no one has given me any negative feedback at all. In fact, the one agent who normally doesn't even rep SF type stories had positive feedback about my characters. This doesn't mean I have the best book ever, but the response has boiled down to straight rejection, one comment about the tight market, and one pass with praise.
So that's my guess, other than the usual subjectivity factor. Believe me, though, it's hard not to think that okay, my book SUCKS and what the heck was I thinking. But now I've got some new things going on since I started querying (the bog and some good success with it) plus an exciting development which I can't go into right now, so I still have a lot of hope.