I think that a clock 35-50%+ on gpu (1.2 to 1.8 GFlops) and 64 MB of low latency eSram can close the gap
plus the efficiency of the system, even with the old specs durango will be on pair or even faster
Let me get this straight we don't know enough about the specs to say the current Durango hardware less powerful but now even if it is MS can crank up the speed and be on par or better due to efficiency?
Its perfectly reasonable to say direct comparisons of hardware could be irrelevant due to what we know but it sounds like you are grasping at anything to say Durango is going to be more powerful here.