Newspapers love nothing more than saying that both parties are equally at fault.  It sounds balanced, and it makes the paper somehow seem wiser than either party.  On the other hand, in this case, it also reflects an inability to differentiate, for example, between making Canada look good on the international stage and denigrating it.  To imply that these two are somehow both bad is an example of false equivalence.  
This editorial could have been improved by deleting the first 5 paragraphs, and by noting at the end that the Liberals have already made all the relevant arguments supporting the decision to settle with Khadr, which are, once again, reiterated here by the Globe & Mail.
Of course both parties know that publicity in the States is amplified, even for the Canadian audience, but it makes a difference to Canada whether that publicity is beneficial or harmful to Canada's international reputation.