Breast cancer was not an order of magnitude more common than prostate cancer:
http://onlinelibrary.wiley.com/doi/10.3322/caac.21332/full#c...
http://onlinelibrary.wiley.com/doi/10.3322/caac.21332/full#c...
Right now breast cancer has a disproportionate amount of money spent on it, but I don't think comparing it to prostate cancer is fair.
Are you sure? It looks like they're both about 21 deaths per 100,000 people: