The result of misplaced trust in a cockerpoo is bruising, cuts, maybe stiches and psychological trauma.
The result of misplaced trust in an XL bully is death.
The two aren't comparable and I find it disingenuous to pretend that they are.
We draw lines like this in society all the time. All cars pose dangers to pedestrians, and that danger boils down to the adult operating them. However we have chosen to not allow US style super trucks on UK roads because, regardless of how responsible the adult operator is, the residual risk to pedestrians is too high.
Cockerpoos are Peugeot 107s and XL bullies are Chevrolet super pick up trucks.