Originally posted by Draco69
Because he's "bliping" in and out of the timestream as Diana said. And then she somehow (Athena was most assuredly blessing her with reality warping powers...) Diana snagged him in his lasso.By bliping, it's the only way he actually "stays" in our world.
Jay gives a good description of Zoom's powers: "He can control how fast or slow he moves ahead in time. He can even stop HIMSELF."
He cannot stop everyone else or freeze everyone. When Hunter wakes up for the first time everyone appears to be frozen but he can hear a humming, which is a fly's wings which are still moving, just very very slowly compared to him. If time was frozen for him it would be impossible for anyone to ever land hits on him, but thats not the case.