Indeed, the part of the bill concerning the DPP does not in any way reduce the Attorney General's power to prosecute. That power is provided for in section 2 of the Criminal Code and will not change.
However, Mr. Bouchard points out that another part of the act establishes a concurrent power of prosecution, and that it does not necessarily withdraw the Attorney General's power to prosecute. Furthermore, there are still reasons to establish agreements in similar circumstances, having regard to resources, interests and so on. That's the current state of the matter.