IFFHS only counts goals at top senior level

All goals at top senior level are counted: top national leagues plus Paulista and Carioca (NL), national cups (NC), official international club tournaments (ICC), official games between national teams (NT).

https://iffhs.com/posts/3081

AFC Ranking. Points are calculated from the most recent 8 seasons from 2014 to 2022 (excluding 2020)
https://www.the-afc.com/en/more/afc_ranking.html

From 2014 to 2022, Saudi Arabia won 2 AFC Champions Leagues, during that time Japan had 3, South Korea had 2, China 1, Australia 1.

Well, Saudi league is better than J League in the AFC Ranking, and the J League is very good at developing young talents, so the Saudi league must have at least some quality in it. Saudi players don’t go abroad, so people often discredit their league in the past