So, Do dropweight machines string tighter a more consistent than crank machines?
I cant write it like a scientist and english is not my first language....but:
In my Experience (IME) the dropweight is a very manual machine where you need to learn some technique and get good muscle memory to have a fast pace stringing... You have to become part of the dropweight machine.....Whereas the crank has inbuild the "muscle memory" in its mechanics. Aka the crank does the technique for you.
The dropweight initially levels out at the reference tension ok, if/when you learned the technique which can take 20 or so stringjobs... and also "calibrate" the dropweight yourself by with a simple cheap fish/bagage digital pull scale weight ( the factory label of tension can be slightly offset on the dropweight leveler).... And then you see the leveler of the DW can go some degress futher if you let it stay for some few more seconds and/or push a bit gently with finger down on leveler and make it bounce gently... all depending on type of string....
Whereas the crank "stops" at a set tension quite quickly moving it backwards, not allowing for the string to do so much stretch and set in before locking out.....
For best end result getting the stringbed to have close to electronic constant pull....you have to with both dropweight and crank do a double (2x) pulls (taking the string out of tension head and re-apply) each time. And then the crank-machine will be faster.
My 2 cents.