Forced Apple ID Security Questions - Choice of 3

I'm confused why one of my Apple IDs has one security question/answer, and the other has 3. One is iCloud, the other is iTunes/developer. (both are long random strings as answers, though)

The whole Apple ID thing is pretty obnoxiously structured. Merging MobileMe (then iCloud) and non-iCloud accounts isn't possible, so you need to maintain two.

Can't these folks login to their iTunes account in a browser, even the iPod browser, and set the final question there?