Histogram discrepancies between FastRawViewer and C1

Hi,
My planned workflow will use FastRawViewer for culling, editing in a Capture One session, and final cataloguing in a master C1 catalogue. FastRawViewer looks great for fast culling. However, I'm struggling to get the histograms for a photo to look similar in FastRawViewer and Capture One so I don't know which on to 'trust'. 
My FastRawViewer settings are default, and I've only ammended Capture One to default new images to the 'Linear Response' curve to maximise data and potential for custom s-curves etc. 
I've attached screenshots of the histograms presented in FastRawViewer and Capture One.... Do I need to configure FastRawViewer to simulate this 'linear response' curve? As can be seen, they bear little resemblence, even the order of different channels appear in a different order.