What hasn't been mentioned in many of these conversations is the marketing advantage. Keith is correct in that any double gun from the 1880's and early 1900's had the top lever centered. Wear caused it to lock up to the left of centre. Current manufactures have taken this up as a marketing advantage in saying their gun is superior because it locks up to the right of centre. Look at any of the English best guns being produced today or for that matter in their entire history and show me a manufacturer who purposely positioned the lever the the right of centre when closed. I would repeat its only today's advertising hype.
