Originally Posted by
gerundium
think about it this way:
M = I*A
M = the moment (Torque) applied to the wheel.
I = moment of inertia
A = angular acceleration.
The moment of inertia is defined by the square of the distance of the mass from the center. So if both wheels are the same weight they can still have a wildy different I depending on the way the weight is distributed. the weight of the hub is important here, for a very similar hub weight and size the zipps should have a lower I. That is because if the hubs are similar together with the spokes the rims are the same weight but the zipps are higher and will thus have a lower radius.
Like I said, how big an effect do you think this is? Spinning a wheel up isn't only a matter of moment of inertia. There's still aero drag and bearing friction. Put in some numbers and see how trivial acceleration effects truly are.