Well, there really is a reason why just about everyone on this forum (myself included) recommends a Cannondale CAAD-series frame for anyone racing on a budget... I took a short check ride on the newly built-up CAAD8 yesterday, and while it's not quite on par with the F4:13, it's tough to beat in the bang-for-the-buck department.
Cornering: The CAAD8 is extremely nimble in turns and remarkably stable, but the Pinarello wins by a nose in front end responsiveness--it's just a little more sensitive/a little quicker to respond to steering input than the CAAD8, but that's kind of a subjective thing anyway.
Rough roads: The CAAD8 definitely transmits a lot more road buzz to the rider than the F4:13, but I'll say that the CAAD8 is leaps and bounds better than my last Cannondale, a CAAD3 Amazing what generations of frame design can do. Like a lot of CF frames, though, the F4:13's ride is very smooth, so it's tough for an AL frame to compete.
Stiffness: The CAAD is way stiff, and the pedal feel is very direct--definitely gives the sense that power is going right to the road. It wasn't until I laid on a maximal sprint that I felt any flex in the down tube/BB, and while it was a LITTLE bit flexier than the Pinarello, it wasn't by much.
So overall, there are no surprises here. The CAAD8 doesn't have the same ride as an italian CF wunderbike, but it's damn close, and if you can't/don't want to spend the cash for the super bling, you'll still get a more-than-capable race rig with the CAAD8/9.
Now I just wait for my Zipps to be done, and I'll throw them on the new 'Dale. Pics to follow!