Tire selection will be much more important than wheel size. Most of the time people are not comparing the same tires on the 26" wheels and 700c wheels. I could setup 700c bikes so you'd see the same effect simply by putting the slower rolling tires on your 700c bike.
We'll see, I just changed out a set of Specialized Nimbus tires with a set of Schwalb Marathons yesterday. I haven't ridden enough on the new ones yet to make a judgement.
Last edited by Gus Riley; 05-08-11 at 10:26 AM.