Nah, not the weakest. Once it starts critting itll be oh so good. ALSO, being able to push left or right is better than just pushing back. Also you can get free grabs off of using it in melee range. ALSO most adds run to cover then step out in a direction to shoot...thats a free dead minion per shot.
BUT, until they fix crit it is high skill for less reward than the Shleuder. And then even stilll it'll be worse than the Shleuder.