The rating scale has completely changed for the dual core processors... In fact I still dont understand exactly how they're being rated, lol.
On a side note... Those benchmarks really mean nothing at this point in time. There's no software / hardware / driver support for dual core technology at this point. Once companies start releasing software built to thrive off of the two core I think we will be able to see the X2's really stand out from the crowd. Too early to be comparing its performance to the other Athlons IMHO.