thank you for the replies.
that being said, my issue was not that much about the fact it was the collection was aimed for newbies (in fact i am a newbie: never had the opportunity to play since i was a child, and even then, i collected more than i played), but more about the fact that the issues, aside from being poorer (but maybe it is just a subjective impression), focus more on the lore than the game and are wayyyyyyyyy slower to introduce the new gameplay elements/painting methods.
To compare: (i wasn't able to find the first three issues of bgime available without registration on the internet, so i will show the 1,5 and 10 to illustrate my point)
https://vdocuments.site/lotr-battle-games-in-middle-earth-issue-01.html
https://kupdf.net/download/lotr-battle-games-in-middle-earth-issue-5_58f89cccdc0d600140da9863_pdf
https://doku.pub/documents/battle-games-in-middle-earth-issue-10-6oq1e4o9mz02
as you can see, both mortal realms and bgime start from scratch (in terms of rules, painting, scenery craft). The only difference is that bgime goes way faster in all of those aspects (on the first issue you already learned basic painting of gobelin, while for mortal realms, on 3rd issue you only learnt undercoat... same for the rules, you learn the rules much more faster in bgime, thus are able to play advanced scenario much more quickly (also thanks to the use of proxies))
In fact the ironic part is that when i got bgime, i used to watch pictures and overlook text (i was 8), thus i didn't understand/misunderstood lots of things that i understood much later, and now that i am a young adult, I have a new collection with very big picture in it and that over-explains everything😆...