It's ridiculous because guns are tools with a single purpose (destroying things, whether they be inanimate targets or teens of color) while dogs are living beings with complex socialization patterns but this conversation has already reached the unironic advocacy for wiping out an entire breed so I don't know why I'm bothering.
Guns are tools, as are dogs. Granted dogs are more varied in what they were bred for. Companionship, hunting, guarding, etc...
Devo and a few others on the last page seem to concede that pits are bred to be more aggressive. With the argument being that if you banned pit ownership or wiped pits out, people would just move on to fucking up another breed on a genetic level.