MAybe you missed what you wrote? A cyclocross bike isn't designed to take fenders though you could probably force them on. A "Sport Touring" bike is basically a cyclocross bike set up for fenders.
A modern cyclocross bike generally has pretty sensitive steering while a Sport Touring bike relaxes a little.
But both those marioni's are virtually identical.
I see two problems -
1) The threadless stem means that you can't get enough height to the bars unless you put in a lot of spacers and use a road stem upside down.
2) There is only marginal clearance for finders even on the Touring model.
check out the differences yourself:
http://www.cannondale.com/bikes/05/cusa/model-5TR2.html
http://www.sheldonbrown.com/volpe.html
http://www.fujibikes.com/2006/bikes.asp?id=143
http://www.bgcycles.com/