I'll answer quickly 'cause here is so late. Hope I am clear.
What we see is the ranking automatically generated by itch.io.
The 20-ratings rule is a (wise) addition of the organizers and not in the code that generated the list (that still does implement an analogous mechanism, see the scores in the last pages). The 20 ratings rule is like an "additional" filter.
Anyway, I was curious to see my position excluding the submissions below 20 ratings so if I have the time I'll write some code to filter the results and generate an above-20 ranking, unless someone else does it before me.