From the Public Prosecution Service of Canada handbook, which is available on the justice department website, if anybody wants to look at it, it says very clearly:
When deciding whether to initiate and conduct a prosecution...council must consider two issues: Is there a reasonable prospect of conviction based on evidence that is likely to be available at trial? If there is, would a prosecution best serve the public interest?
With this in mind, would you agree that the two questions for a prosecutor are reasonable prospect of conviction and public interest?