I think Squall is level 98 or so, while my Zidane is at level 100 with most of my abilities mastered. It's not like the level difference is killing me, but the equipment on Squall is just soooo sick compared to mine, with accessories and all. His moves do so much bravery damage it's frustrating.. -_-
And yeah I have the DC unlocked! I have all the courses except the Blackjack course unlocked, but besides getting the items needed, I don't really see the use of it overall. I have better luck farming for items/accessories off of the offline character cards that I have, like the level 100 tidus for example. That's how I got my Chicken Knife

What kind of accessory setup do you use for zidane?