I've loved this picture for years and years and have come back to look at it recently. I saw both and your comment and I would have to agree. Its the sadness that had drawn me in. It reflects the truth of reality.
Whoa, you're the one that did this! i stumbled upon you just now, and i have definitely seen this particular 'two prostitutes' image now n again on the internet, nice to finally see an artist page from the one that made it!