It's weaker overall since "cyber terror" could be continuous. If you wanted to carry out continuous terror attacks you'd need a shitload of dudes to run around with guns and bomb trucks, and you'd need to train, feed, and move them. With computers, none of that is a problem any more. So why don't you see strictly more cyber terror than regular terror, always?
You could just send dudes to the US with a small amount of cash and instructions to buy a gun and shoot up a public place. Terror doesn't have to be sophisticated. We're seeing how bad an attack can be with nothing more than a truck. That it's not happening constantly suggests a marked shortage of dudes willing to do these things.
