I think a better test is to test ride each bike and put it through its paces. That is, test its handling, cornering abilities, AND most importantly its RIDING abilities. Most people, test out bikes in the parking lots and little streets behind a bike shop. That's not a real test. A lot of people are like, "gee that one was really light and seemed pretty stiff. I'll take it." Then, they go on a longer ride and their ass and back are tired and beat because the frame was ultra stiff. Remember, as far as feel the most important thing is how it rides. Secondary is how it handles corners, etc. You spend 99% of your time riding a straight line and 1% of your time cornering. Obviously, if you care about looks then you spend 100% of your time looking at your bike on a bike rack of a BMW. hehhe
So, to really test each bikes worthiness you'd have to have the same components and wheels with the same inflation pressures and ride each for about 2-3 hours over some chip and seal roads on different days. I say different days because you want a totally non-biased opinion of how the bike AND you feel. Testing over ultra-smooth roads ain't gonna tell you much either. This is obviously totally unrealistic because bike shops don't loan bikes out.
As you can probably tell, I'm not a big fan of thin fat-tube aluminum tubes. Remember, the larger the diameter of tubing, the stiffer the frame. Nothing against Canondale, but if they had some more sensibly sized smaller diameter aluminum tubes in their road bike line, then maybe I'd like them more. Some of the Merckx, Pinerello, and European frames that alot of pros are using have smaller aluminum tubes than Canondale's making them more compliant and comfy. See the thing is, ultra-stiff is great if you are into that and if you are part of the small part of the population into that stuff. So yes, if you like stiffness BY ALL MEANS buy the Canondale! But even racers demand comfort. And what good is that ultra-stiff frame when at the end of a race you are too beat up to sprint? Anyway, I think stiffness is great and all, but it really is secondary to fit and comfort. Just IMO.
My opinionated thoughts on bike design in regards to what's important
1) Fit
2) Comfort
3) Handling
4) Stiffness