From what posters on CB think, RIM still has a secret weapon up their sleeve that they will reveal which will BLOW the competition away. I mean, you know it's got to be something pretty good if dual core and 1GB of RAM can run it, right?
Samsung is definately at the top of their game right now. They are the only phones that are offering a level of multi-tasking which is unrivaled right now, and which I dont' believe even BB10 and their "Active Frames" will able to touch. This software is ONLY able to run flawlessly on their equipment because of the hardware capabilities. And with custom launchers being made that are already emulating some of what BB10 offers (to a degree), I believe that, once again, BB10 will be late to the party. For those who haven't yet seen what Samsung is capable of, check it out:
Samsung Galaxy Note 10.1 Multitasking demo - YouTube
This is already available on the Note II, the Note 10.1, and soon (if not already) on the GSIII