Blitzcrank and the rocket grab
Ok, can someone explain to me why his grab can go through walls? I mean, Thresh can't go through walls or even pull to a wall. Nautilus hits the wall and pulls himself towards the wall. And yet, if you're just an unsuspecting champ roaming into your lane and suddenly BAM, a giant robotic fist somehow manages to come through a wall with the force of a thousand bottle rockets, grab you and then pull you through a wall that you could otherwise not get through on your own.
Why can he pull through walls? Should Riot fix this?
Discuss.