Good question...
Here are some of the advantages I see...
1) A new beginning with a new early adoption... competitors for ranks have obscenely steep curves for ranking up that are not only time based, but skill based.. (and with this comes tons of manipulation of how to dish out rewards, etc)... I think this forum overtime will have a higher difficulty as well but its quite easy at least right now without a built-in time element where no matter what it takes 2 years to get through the ranks.
2) Altcoin focused. You can break away from "This forum was a lot better before all the altcoins and bounties started.. we used to not even have signatures!" mentality.
3) Sparta and ALTS tokens.. when Sparta and ALTS are up and functional the way they are intended to be with more projects signing on and more organization around these projects, there will be a lot more incentive for projects to come here, and other people from competition forums to join. The idea behind it and how SPARTA people will get a slice of each sponsored bounty's pie could lead to incredible payouts and often, and ALTS tokens allow for early adopters to capitalize on easy to farm points before it becomes more difficult and as incentive why you are working through the ranks
4) The forums just look better.. this one doesn't need a lot of explanation.
5) People are less elitist.. we are all new in this space and we are here for a reason... either for advancing more opportunities or just sick of the old way, etc. We would like things to be a lot more friendly here and less condescending.. something you just aren't gonna get with our competition.