For what it's worth, the two terms seem to denote the event rather than the machine. I was just reading from The Golden age of Bicycles, ( or rather Golden age of Cyclotouring) that the bikes often were ordered with the latest advances, there are photo's of saddles cut away or mounted directly to Seat tubes to reduce weight, innovative gearing etc. On the commetitive trials the bikes would carry 8.8lbs. All this sounds more like what is described as a Contemporary Rando. bike. The book also goes on to describe Cyclotouring as a response to getting out of the city for the weekend, exploring. All of this seems to have more in common with contemporary Rando. or Sport Touring setups than light touring geometry. But then again ....I'm probably wrong.