I was responding to a specific comment about prices.

You're right that the price doesn't fully correlate with security. It will reflect supply (security and interest of researchers) and demand (how much there is to be gained by breaking into each platform).

Android is more widely used, but I gather more money is spent in the app store than the play store. I don't know the market share of "interesting" users.

My analysis would be that the number shows they're not that far apart. I'd be skeptical of anyone (IE apple's press release) saying that either platform is more secure. Security is too nuanced to be expressed as a total order.