He is probably going by the supposed Athlon X2 GE-6x00 TDP numbers(all are 45W rated).

BTW,2 cores using that 2 MB L3 is really showing the benefits in short PCGH test.I'd guess with Deneb dual core and its much bigger and faster L3,we might see even better results since 2 cores will share 6MB of L3.Apart from that, clocks,power consumption and IPC will obviously be improved with Deneb too.