Size units - a question

[KraMax]

Ok.
I have taken advantage of search and have found some discussion of errors in Belgian OOB.
Here that writes DRG:

"Another fun fact, your belgian 6 man para unit are not alone in being size zero, There are 117 other infantry units in the OOB's with more than 5 men and size zero (an issue, as I said, that is under review)"

Also I have found many units in game in the different countries with 0 size and names distinct from scouts, inf-at, inf-sam etc. But even if you also are right, let's look on American OOB - for an example unit 743, 744, 749 - scouts with anti-tank arms and the size 0. I am assured that experience of these scouts not much better than if they were called paratroops and them would be as much - 5 persons.

In what a difference between scouts and for example infantry? In experience, quantity of arms, quantity of soldiers etc. But we all it do experience and morals - we change modifiers, arms also we change by means of Mobhack etc. But than 5 persons differ from 5 men? Anything! Especially if to consider that we compare 5 scouts and 5 paratroops.