erupton - bear in mind that there are 2 quite different types of bikes here. There are the more race oriented cx ones - Giant, Planet X, Vapour and then there are the more tour/do it all ones like the Croix De Fer. In between there are a bundle too; the Orange is a recent addition, and looks quite race oriented to me, although the fork choice, desptite what the recent mag review says, seems odd as you say. The Pinnacle on paper (and in mag reviews of the 13 model) is top spec , probably due to an 'unbranded inhouse' frame, which probably came from same factory as the branded ones anyway. The only criticism anywhere of the Pinnacle I can find is that some folk find their left heel kicks the rear brake adjuster and winds the pad in occiasionally.
On RRP, the Pinnacle is a better deal that the Genesis also. But, the Genesis has a certain appeal too !