I don't see any other thread in the general section asking or discussing this, and I'm not about to sift through the 12 pages in the Blackberry board. I'd just like a to-the-point comparison between the two here please.
From my day of use, apart from the "last online" thing or PIN security (which sorta loses its purpose when people advertise their PINs) I am not seeing any real advantages to BBM on iPhone/Android. I'd go as far as saying it has less features than whatsapp.. I tried to find a reason to make a switch and not seeing it, eventually this app may be deleted from non-use.