I primarily wanted to focus on the question of scribal accuracy. I suspect that analysis of word repetitions based on Currier languages has probably been looked at quite a lot. But it's a worthwhile question to ask if Currier language differences explain most of the discrepancy between hands 1 and 3. The results are interesting.
Language A Mean Repetition Rate: 0.7273%
Language B Mean Repetition Rate: 0.5787%
Confidence that A > B: 93.0%
So based on this it actually seems the confidence level of word repetitions of hand 1 vs hand 3 being different (96.6%) is more significant than word repetitions of lang A vs lang B being different, but not by a lot.
I think the main issue preventing any solid conclusions is that there's a lot of correlation between hands and langs, so separating out the differences is difficult. The most statistically significant differences seem to be between hand 1 and hand 3, which are also the hands that use the most different langs.
Language A Mean Repetition Rate: 0.7273%
Language B Mean Repetition Rate: 0.5787%
Confidence that A > B: 93.0%
So based on this it actually seems the confidence level of word repetitions of hand 1 vs hand 3 being different (96.6%) is more significant than word repetitions of lang A vs lang B being different, but not by a lot.
I think the main issue preventing any solid conclusions is that there's a lot of correlation between hands and langs, so separating out the differences is difficult. The most statistically significant differences seem to be between hand 1 and hand 3, which are also the hands that use the most different langs.