I guess it has only just been added so there are bound to be a few things in need of an edit. Around here for example there are quite a few gaps (the nice, largely traffic free route from Wicken to Ely being one).
Worryingly, they have also included one of Sustrans 'aspirational' routes (over the River Cam at Waterbeach to Lode) which involves a fairly convoluted river lock, a kissing gate, two styles and a prominent 'no cycling' sign! I do it occasionally but wouldn't recommend it- especially not fully loaded. I hope this and other such routes get removed as I don't think one landowner with whom Sustrans are in negotiations with for the route will be too chuffed.