[Magnus3x]

I think they should rephrase it to the Blackberry killer, since it occupied this space far longer than the Iphone/Itouch years.

Iphone like the MAC will not be the go to business device. The Canadian and US Gov all have deals with Blackberry to outfit their members, as do most media outlets, that is something they will not drop and replace with the Iphone.
Simply put, this boils down to demographics of users and not who kills who. If you really looked into the nuts and bolts of the two I think you would find factors in both instances that out do the other. If you look at what the user wants with each you will see a clear division.