Outlawing pit bulls is like outlawing AR rifles, it won't stop the maulings or killings.
AR rifles don't jump out of my safe, bash down my door, and go out and chew some teenager to death by themselves.
The AR rifle owner can control the AR. The pit bull owner can't. That's the difference. That's why pit bull owners are stupid and, frankly, evil, whether they know that or not.