I'm not convinced it was much of a victory.
The 2nd ammendment is very clearly stated. DC was clearly in violation. That's all they needed to say. As far as I can tell from scotusblog.com, the court only really upheld the right of a non-felon to keep a handgun or musket in their home after going through some registration process.
SCOTUSblog » Heller quotes from the majority - opinion is linked in the next post (http://www.scotusblog.com/wp/heller-...-the-majority/)
The thing is, Scotusblog put up quotes that fit their agenda, they took them out of context. In context what they put up reads much better for us. Read the opinion, don't listen to SCOTUSblog on what it means. Remember, the people who host SCOTUSblog are from one of the firms that argued against Heller.