The only way to get a true picture of the capacity is to compare the hourly capacity on line 1 and line 2. Does anyone have those?
For TR on Line 1, if you go with 1,080 a train, and a frequency of every 2 minutes, you are looking at 30,240 an hour. So about 24,000 versus 30,000.
For a TR on Line 4, it's about 20,000 - I guess that's Light Rail.
I'm not convinced this is comparable to the "Stadtbahnwagen", isn't that just the translation of LRT to German? It seems to encompass a lot of different types of lines, including some that aren't grade-separated. Looking at
https://de.wikipedia.org/wiki/Stadtbahn#Aktuelle_Definition, it says the capacity is 20,000 to 100,000 passengers a day - which is significantly less than the number of expected passengers cited in that new video - let alone the actual Line 3 capacity (say 24,000 × 18 = 432,000 per direction = 864,000 total per day).
Is there an actual line that this could be compared to - most of the lines seem relatively narrow compared to the rolling stock we are expecting - closer to 2.5 metres than 3 metres.
I'd say it's seems more similar to some of the Paris Metro rolling stock - other than being much wider, and presumably longer trains.
It puzzles me how much higher the Line 3 capacity is to a Paris Metro line, or even some of the London Tube lines, and yet we are still throwing around LRT.
(sigh - sorry to raise capacity again - it was just a passing reference)