I have the OG Atrix. I love it. Would I upgrade to Atrix 2, not at all. There is only a better screen, better (more megapixel) camera, no fingerprint scanner, smaller battery, no true 4G, same processor.
Why bother with this phone. If the OG Atrix is cheaper go with that or wait for Nexus.
A true successor would be Kal-El processor clocked at 1.5 maybe even 2. Fingerprint scanner. I could care less about camera. Better battery or power management. And ice cream sandwich.
Personally next phone for me would be quad-core or nexus.
You're so wrong it isn't even funny. The screen is miles better, the processor is a generation ahead of the Tegra 2 (no, it isn't the same one as the original), which in turn means that this device is going to have much better battery life. Only an idiot would buy the older Atrix with this one coming out at $99.
Good luck with your Kal El. You're going to be waiting until next Summer.