"an extradition treaty would commit Canada to transferring fugitive Chinese officials to a country known for biased courts and harsh interrogation methods – and where the death penalty can be imposed even for non-violent crimes."
Translation:  Canada aspires to become a safe haven for any and all criminals from any country we don't like, depending on the flavour of government we have in Ottawa.
But if 'prejudicial treatment' is such a big no-no, why are we extraditing anybody to the US? They have the death penalty, they use 'harsh interrogation methods', operate 'black sites' commit extrajudicial killings, still they snap their fingers and we jump.
Hypocrisy is at its best.