In his testimony--and I think I did see the blog you're referring to--Professor Geist indicated there was no distinction between the ECPA and the Australian legislation, since they both used the same term.
Well, the fact is they use the same defined term in name, but the definitions are actually different. So while they use the same term, in Australia they define it as a specific series of acts that are direct marketing, whereas the Canadian bill, which would include a long list of items--very similar to Australia's--adds this general principle that it could incorporate anything broader.
So they're the same in name but not in effect.