Can confirm, assuming I counted correctly we actually had slightly better odds for both golds and rainbows than standard rates. Excellent job everyone, thanks for participating!
(Also, thanks for revealing the mystery girl's identity. I have a difficult time with non-Nutaku girls, and I couldn't see her face well enough to match it to anyone in the wikia. By the way, how do you make your charts have nice gridlines? Can't figure out how to make them visible.)