right, but their ships don't have shields and beaming technology is powerful against them, its also powerful against other enemies. Since we have 5 deadulus class ships, Earth is portected against all enemy.
I really don't think 5 Deadulus class ships could take on the entire Wraith fleet. If the Wraith had the technology to reach the Milky Way galaxy they would probably all abandon the Pegasus Galaxy for a much richer feeding ground. They would not ally themselves with the Gaould or the Lucian Alliance, but they would unite amongst themselves as they did during the war with the Ancients to gain access to the single most populated planet in the galaxy.