No, I understand perfectly. What you are not getting is that there were other factors at play when the previous comic was released 9 years ago which lead to it being discontinued after two years that are not present now.
However, this comic is clearly a different beast than the previous one to the point where DC thinks that it will be successful enough to warrant it.
Just because something didn't quite work before doesn't meat it will never work. Just look at how many times Star Trek
comics have been cancelled and then started up again.