I noted with interest when researching a project on RNZAF Station Whenuapai/Auckland Airport; that though the Britannia carried more people than the DC-7C (up to 139, compared to 86 - 103); it had an LCN of 40 - exactly the same as the airport's runways; and the DC-7C had a LCN of 55. This made CAA very hesitant about allowing them into Whenuapai at all, but they were allowed to land there twice weekly as of 1960.
Question - if the DC-7C had 10 wheels like the Britannia, rather than the five it had, would this have made its LCN lower?
To my mind it would, but I am not a professional pilot, or engineer, and there are probably other complicated factors involved.
(To add a little to the problem, Whenuapai's runways were/are made of intersecting hexagonal concrete blocks, which are not cemented together, although the main runway does have a tarmac overlay since 1962).