It won't run even CLOSE with a 1570 balance....you wouldn't even be able to begin to time it....it wouldn't even register on the scale on the timing machine.
The diameter of the balance will not affect the timing.
If the beat rate is the same...and the stud lines up...it could be timed.
An AR balance wheel uses the same staff as an NA and is 18,000 bph. It is smaller...in diameter. The roller table may also be different but you could put an NA table on it and adjust the stud to line up with the bigger balance cock and it theoretically would run in time.
A balance and HS calibrated for a different beat rate regardless of size will not run correctly in the other watch.