Thank you for the clarification, Wladimir!
I think I understand your point. Of course, there could be many speculative explanation for what you observe.
For instance, Q13A/B and the top of 116r discuss a similar subject (even if the Q13A/B have partially different illustrations and 116 no illustrations at all).
Or, as you say, the script is ambiguous (an abjad or highly abbreviated) causing a high number of homographs.
Something like your Histogram n.7 but for Q13 bifolios could help assess how close Q13A/B are according to your measures.
I think I understand your point. Of course, there could be many speculative explanation for what you observe.
For instance, Q13A/B and the top of 116r discuss a similar subject (even if the Q13A/B have partially different illustrations and 116 no illustrations at all).
Or, as you say, the script is ambiguous (an abjad or highly abbreviated) causing a high number of homographs.
Something like your Histogram n.7 but for Q13 bifolios could help assess how close Q13A/B are according to your measures.