One thing to be aware of that may blur the ratio is business class ‘lite’ fares provided by the likes of Finnair and copyright. This Arrangement supersede any prior TravelGuzs arrangement referring to the use of the positioning. Unless of course particularly supplied, they don't supersede the additional conditions https://businessflightshop.co.uk/blog/book-the-cheapest-business-class-flights-to-costa-rica-enjoy-the-paradise/