I hadn't taken offence - I didn't see it as an a X sold more than Y, so X must be better comment, I was more commenting on there being a sales market for people like me who just won't buy a 2 seater as a weekend toy, as the opportunity for use would be extremely limited at weekends if they can't take their children.
Looking at the data, I do see your point about the year on year sales, however there is something else to think about that is specific to the elite/eclat sale figures which skews the data, rather than to the sales concept of a 2+2 Lotus.
I believe the replacement chassis issues from the rear crossmember were first sighted at around 4-5 years old. So for the early cars, there were the beginings of tales of woe from 1977-78. This would have decimated sales for the later cars. I would guess that if the original product didn't have a massive achillies heel, the sales momentum for the 2+2's might have continued for a bit longer. Sales also dropped off as the design got older. The elite is an older design than the esprit and was further through its product life cycle, James Bond also probably played a part in boosting esprit figures. I think by the time of the S2 review for the elite and eclat, the damage had been done and mud stuck. Even excels were tarnished (unfairly) with a reputation for unreliability caused by the problems of the S1 elites/eclats and disolving rear chassis crossmembers when the cars were subjected to everyday use.
I'm sure I'm not alone in ruling out a 2 seater as a method of transport, so there must be a market for the Evora or a larger front engined Lotus 4 seater.