Troop, the very page you posted says this:
Note:*If you are using iCloud Backup and iTunes Backup at the same time, but you are concerned about using too much of your iCloud storage, or you simply want to speed up your iCloud Backup & Restore functions, you should consider avoiding backing up very large Camera Rolls to iCloud. For example: if you have a 15 GB Camera Roll on your iPhone, you may not wish to back up that to iCloud if you are already using iTunes to back up and sync your photo content. You can choose to disable the backing up of any item in Settings > iCloud > Storage & Backup > Backups: > Backup Options.
Me again: the page does not say that iCloud won't back up camera rolls over 1GB. It just refers to iTunes as perhaps being a better way to back up large camera rolls.