For one, I don't know because there's so many psychological variables involved. It might be opposite of what I would speculate who knows.

But if I were to speculate, I would guess those who respond voluntarily would be less aggressive in their numbers of deer killed per year (all other variables concerning their hunting situation being equal). I would guess those who throw it in the garbage, for whatever reason, would be more aggressive on number deer killed per year. The reason I suspect that is 1) those who break the law aren't going to own up, 2) those who knowingly overharvest versus what their particular land can sustain will sheepishly low ball their numbers and 3) i think people who voluntarily answer surveys are naturally more "compliant and community oriented" (not that I'm saying that's a preferable way to be) versus those who get pissed and rip up a govt survey, and thus would naturally be more prone harvesting inline with what they perceive would be conservative numbers.

All I'm saying its two different mindsets of people, and there would probably be differences in kill numbers