Would be nice to have an unlocked bootloader I agree with that 100%. Moto ninja blur does drag the phone down a bit, but this phone is still pretty blazing and can eat full flash webpages and pretty much every game I've thrown at it with no issue. But yeah custom kernels and AOSP roms on this beast would be sweet. Most programs and software currently out isn't optimized for dual core, but that soon will change. Honestly I don't see why people even bother to base a phones performance sheerly on quadrant, if that were the case the Droid Charge would be complete garbage and according to the score, we should be amazed that it even runs anything at all. Yet when I had the charge it was fairly smooth, but still dragged due to the outdated single core processor they had in there.
Best thing is to try the phone out, use it for what you use normally and see how well it does. But if you insist on benches basing your decision, then try antutu system bench and smart bench 2011. Those 2 applications are more reliable than quadrant imo, since it is easy to increase/falsify Quadrant scores, that and I feel that Quadrant isn't a reliable bench. Once we start seeing optimizations for dual core, ie Gingerbread and multithreaded applications the difference between single core and dual core will be day and night for more intesive apps. But for everyday normal usage, probably not much of a difference :3 pznerd.