These factory built things also look really crap after a harsh winter.
The Paris-Roubaix is a good indicator of whats going to last the distance. The pounding wheels get here is akin to a good seasons worth of road use for the 'sportive' rider.
So, what are they using?
Deep section carbon rims are dreaded by P-R pros. They snap forks, steering columns and frames, nevermind compressed vertebra. Trek were flouting their new Bontrager carbons (BIG decals) last year and they were also trying rear elastomer cushioned frames to counteract the pain! What price advertising eh?
We often see them getting the old Mavic SSC and various Ambrosio and Pianni rims out, laced to whatever hubs their mechanic recommends (Ambrosio hubs are quite popular), they are usually 32 or 36 hole 3x at the rear.
and Boonen were using DuraAce hubs last year at certain times during the TdF probably when their confidence ran out with the factory builts.
I would agree that these Fulcrums and Campagnolo LOOK similar. At the lower end, they will also be of similar poor quality.
End Note: Mavics Aksium are OK for a cheap, infrequently used pair, but they also look dreadful if you ride them through the winter. The black ones anyway. The paint or plastic coating comes off the hubs and the spokes RUST!
Try it for yourself but I did warn you.