Based on what I've read here, I'm sure the random draw only applies to the Citi presale and the General on sale. But those of us who are subscribers to the fan club will all get presale codes. If the random lottery thing applies to the fan club member presale too, I hope the mods can clarify, but as for now I'm pretty sure it only applies to the public sale and the Citi presale.
The difference in the public on sale of tickets this time is that anyone who wants to participate in the general on sale has to do the verified fan registration and register for the specific show(s) that they want to try for. And then on the day tickets go on sale, IF they are lucky and get picked by Ticketmaster, then they will get a code to buy tickets. But there's no guarantee during the public on sale that someone will get picked to get a code.